Science your way to the blue ribbon.
Check out Al's website if you want stuff to build your own: www.docfizzix.com/
10 quick, practical build tips: www.dropbox.com/s/x35qfah75x4...
MERCH-
By popular demand I have shirts now! I picked the super soft, high quality shirts and make $0 on all items which is why they are priced so handsomely :)
teespring.com/stores/markrober
MUSIC-
0:01- Arrow- Andrew Applepie- andrewapplepie.com/
1:06- Q- Blue Wednesday - / bluewednesday
4:43- Almost Original- Joakim Karud- / joakimkarud
5:47- Ceral Killa- Blue Wednesday - / bluewednesday
7:37- Berlin- Andrew Applepie- andrewapplepie.com/
12:24- Dizzy- Joakim Karud- / joakimkarud
14:24- Too Happy to be cool by Notebreak- / dubstep-too-happy-to-b...
Summary: To understand how mousetrap cars work you first need to understand the concept of mechanical advantage. There are 4 principles to win with a long distance car:
And 4 principles for winning with a speed car:
Finally, we visit the Science Olympiad to see these principles in action
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I make videos like this once a month all year long while supplies last:
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When we did this in highschool our speed/acceleration contest was only over a meter, so I just used the mouse trap to catapult my car over the finish line.
Modern problems require ancient solutions
*yeet*
How’d that work for you
@@James-tv2bm Great, I won easily. It was so fast you couldn't really hand time it properly. Of course it rarely landed on its wheels so it wasn't any good over a longer distance.
That's actually smart
The internet needs more people like Mark Rober. KZhead should give incentives for NASA employees to become creators.
Potato Jet my science teacher is a scientist with the opportunity rover. Its cool because there is a club thing where we get to work with nasa with it. However that teacher isn’t very nice and I have been yelled at for doing what I was supposed to be doing a couple times. One specific instance of this was with force vectors. She asked the class how to do them without telling us first. I connected it to vectors which we saw in geometry but I was yelled at to stop doing geometry because this is science. She then explained how to do it and it was geometry... I wouldn’t like to see her on KZhead tbh.
NASA employees should stick to being important
Pasgh ikhami getting to Mars is important but following your passion and having a life is also important
Has anyone ever tried using this same concept to propell something like a paper airplane? Doesnt necessarily need to be made out of paper because thats flimsy, but i think that would be a fun idea too
Not all NASA employees are like him they are mostly old
Can you imagine how lucky some future kid is gonna be to be able to call Mark Rober their physics teacher??
omg now thats something mind blowing
yes,I wish we could study again
Could you imagine the school board looking at what he would want to do? Lol
@@chriswilliamson806 so today we’re gonna catapult an entire cafeteria
Well we can also call him our physics teacher too. Just for us he teaches us here on KZhead as oppose to a classroom.
in my 8th grade science class we are actually doing something where you can either build a lander or a rover, no electricity and stuff like that. I had the egg drop thing as an idea for a lander and this for a rover and I'm super excited to test both out and see which one is better.
So what happened
- Dad, why is my sister called Rose? - Because your mother loves flowers. - Oh ok, thanks dad.. - No problem, Mechanical Advantage.
*D E L E T E T H I S C O M M E N T*
@@BlitzBodyBeats Why
@@WarmongerSlays some man want to watch the world burn
No problem. *communism*
EEE EEE no problem democracy
I wish Mark was my physics teacher...
That would be amazing class would never be boring
You and everyone else. Move to Denver Mark
I know!
My Physic teachers failed me with a 59.6 in high school. I went after school everyday to work on crap because everything was group based. My friend didn't know anything, and stoner girl didn't show up. The workload was added on as the first group finished, so it was impossible to actually keep up. Two years after I graduate I found out he was sleeping with a sophomore girl and was caught and he fled the country....Yeah I wish this guy had been my Physics teacher.
@@neb4587 I couldn't get full credit because I didn't have group members to finish their stuff. Yeah he was a creep.
It’s almost 2022 and I’m still enjoying this video, I mean the way Mark explains engineering is so amazing.
yes ikr he also inspired me to make a montage in my video
Welcome to Joseph's nightmare
It's almost 2023 and I'm still enjoying this video, I mean the way Mark explains engineering is so amazing.
its already 2023 for me
Hello its 2024 buddy wake u0
no one is talking about how mark was outside IN THE RAIN for a bit just so he can explain the topic he was on. I want him to be my teacher.
The way Mark explains physics is not only easier to understand than school ever taught me but he makes it so much more interesting
chicken nuggets
Yes exactly
@@rockhopper6316 What scares me is "go dominate the competition" means you won by like 1.5 mm
@@JupiterKnight chicken numgies
@@wren7195 yea lol
When mr. Rober is a physics teacher to almost 10 million people and doesn't realize it.
On-Plot-Point physics, engineering, math, science, medical information, problem solving, and FUN!!!
@@Shrin3Iroh 10.2 mil
@flowazx 10.3 mil
@@salteds0cks 10.4 mil
*don't
Hey Mark! Nice Video. I wanted to point out that, at 2:03, mechanical advantage doesn't necessarily equal number of pulleys in all pulley systems. This is because fixed pulleys (pulleys which don't move while the load does) have a mechanical advantage of 1, while movable pulleys (pulleys which do move while the load does) have a mechanical advantage of 2. This is why, in your case, the pulley system had a mechanical advantage of 4: the specific arrangement and positioning of 2 movable and 2 fixed pulleys allowed the system to have a mechanical advantage of 4. However, it is important to note that this doesn't happen to all arrangements of 4 pulleys, as if you were to line up 4 fixed pulleys, you would still get an mechanical advantage of 1, not 4. Thus, you cannot say that mechanical advantage equals number of pulleys in all pulley systems. Instead, you could "split" up the tension along the ropes of a pulley through a diagram. Here's the procedure: you first can imagine that you are holding the end of whatever pulley system you are trying to solve with such a force such that the system is in static equilibrium. Next, you can split the tension caused by the force of the load among the ropes of the pulley system. The key to remember is that each unbroken piece of rope will have uniform tension along it. Finally, you keep splitting the tension all the way until you reach the rope which you are holding. The mechanical advantage of the pulley system will simply be the the load force divided by the effort force, which is simply equal to the tension in that rope you are holding, since the system is in static equilibrium. THAT is the correct way to solve for the mechanical advantage of a pulley system (sorry if I explained it badly). Additionally, I wanted to point out that, at 2:08, mechanical advantage of an inclined plane does not equal the ratio of the length to the height unless the inclined plane is just flat and not inclined, in which case I wouldn't really call it an "inclined" plane. But instead, mechanical advantage of an inclined plane is equal to the ratio of the hypotenuse to the height. This can be derived like this: the load force on the inclined plane is simply equal to its downward force caused by gravity, which is simple equal to f = ma = mg. We can split this force into its x- and y- components, which we can then deduce that the force of the load in the direction parallel to and going down the hypotenuse of the inclined plane is equal to mgsin(theta), in which theta is the angle of the elevation of the inclined plane. This means that, if we were to push the load up on the inclined plane with force mgsin(theta), then the system would achieve static equilibrium. In other words, the load would stay in place. Since we know that mechanical advantage is defined as the ratio of the output force to the input force, that would simply mean that the mechanical advantage of the inclined plane would be mg/mgsin(theta), as mg is the output force in this case and mgsin(theta) is the input force in this case. This simplifies to 1/sin(theta). This is simply equal to the ratio of the hypotenuse to the side opposite angle theta, which in this case is height. Thus, mechanical advantage of an inclined plane is equal to the ratio of the hypotenuse to the height.
I’m to lazy to read gib a summary
you are absolutley correct but remember mark is tying to simplify these things so people with zero knowledge can understad. he would have lost a LOT of people hadd he tried to explain all of that. hence why he ust suggests we do it ourselves
@@FluffyDragonDrawing summary cool waited awhile
this has sat in my brain for 3 years and has silently been supporting me through my physics classes. Thank you.
“Thank yo-“ Niece: ** *Slaps Ice Cream* ** “O WOAAH”
so rude
Trenity R salty slap
that was cringe
@@Yehe13 it was scripted, you can see they love him
@@rapiintheskyy3585 it was part of the joke, much like your continued existence
1:36 Mark: But I could lift 10lbs 50 times. *Uses a 12 pound weight*
Also said his car weighed 500 lbs soooooo
YoYO Semite which is my point, the weight was also an example to keep math simple
@@zestymushr00m85 it was only one corner of the car being lifted. Which he estimated at 500 pounds
Guys he was just giving an example🙃🙃 I’m agreeing with Jonathan Huang just using the car weight example
YoYO Semite what, where’s the acceleration? You have distance.
I first did this project in 1987 during my student teaching in Industrial arts. We used two mouse traps which allowed options on how to best utilize them. I continued this project for the next 12 years as an engineering project in Drafting class. Best run was 437 feet in a 12 foot wide hallway so straight tracking was important. The best wheels were 33rpm vinyl record albums. I didn't invent this project and don't know it's origins.
The way he explained physics is so much better then the 9 years of science class I've taken
nerd!
I learned more in the first 5 minutes than a whole semester in high school
Sad but tru
Maybe short term, but learning is (or should be) based on retained understanding and application.
Mary Lawrence yeah you are right but you can re watch the video
I feel this. I just wish I had a physics teacher in high school that didn't play favorites to their special projects group (in this case, the solar bike team). If you were on the team, you got her complete attention, if you weren't then tough cookies read the book and too bad if you don't understand it from reading the chapter.
@@avitus2 If you have a teacher that has favorites, that sucks.
Breaking news: Worker in NASA go to school to totally annihilate kids in mousetrap car race
Yuen Kik Li former
Correction: Former Worker at NASA went to a school to totally annihilate kids -in mousetrap car race-
This was for the mousetrap vehicle event for Science Olympiad. Teams spend forever on designs so that’s why Mark did not show the design the team he was visiting was using. They were actually going to nationals and why would Mark leak a teams design if they’re going to Cornell.
lol
I never did this as a kid but being an auto mechanic now I got a huge kick out of this video! Made me think about the mathematics of transmissions and differential final drive ratios. Super fun keep up the great work!
I think I just found a lifetime hobby. Every science teacher I’ve ever had said I possess an extremely intuitive understanding of physics and this seems to be a perfect application of that. Just seeing this video makes my mind go crazy thinking of all the ways I could attempt to improve the design. I wonder if you could devise an equation that could predictably determine what the optimal ratio of mechanical advantage for a given car would be, accounting for factors like weight, wheel diameter, coefficient of friction on the wheels, axels, and every other moving part where friction is present. Obviously there’s a perfectly optimal car that could be made if you could fully understand all these factors and that’s what is most alluring to me.
Press F to pay respects to icecream
Jayden Games bruh im eating some rn 😂😂
Uhhh, im on phone.... 🙄
F
F
@@Naat.ee12 just press reply then SIMPLY press f :)
i was expecting a mouse trap that catches a mouse and drives away with it
Whisper voice: lol, me too!
Same
Hit & Run
Same
Ha
I used this video back in seventh grade over the course of 4 weeks to build a fully optimized (realistically) car. Sadly the pandemic hit and I never got to see how far it went.
Me: This is boring, I can’t wait till schools out *Schools out* Me:*watches educational videos for fun*
Learning is never over.
Hey thats me
Same bro I watch them all the time
This is me I used to just binge watch every large educational channel, then I stopped and now I'm finally getting back into it
Yea in quarantine I'm out of school but I wish I was in it
If he was a teacher at my high school I would never leave the class
Or fail
@@MJaneth no i would fail so i would have him again
Bruh so u skip wooowwwwww
@@tychus7 that's not a good thing
Ditto
Wonderful! From your intro, I thought you were going to make your own design, better than any other. Even so, I enjoyed the lesson.
I made a mousetrap car in 10th grade with a gearbox that made it run for over 30 seconds continuously, but the wheels spun on the tile floor it was tested on and barely went anywhere. Needless to say I didn't win but I've never seen anyone else make one like mine.
Mark: "A little bit of water spills out every time" Also mark: *Purposely misses cup*
He is Like realy Bad at pouring
@The Demon Under Your Bed • 3 years ago thx
you should see liam thompson pour liquid
Mark: Talks like a smart person Me: I don't know what you're talking about, but it seems interesting
the winning model is the one where the mousetrap lever activates a electric motor...
Mark: “I want to be a physics teacher later on” Every subscribers: ^ *has been learning from him since the beginning* ^ 👀
Naruto X Hinata k
1:43 my guy literally standing in the rain for science.... +1 respect
In a design class, we had to make a bridge using two pieces of ondulated paper (it had a standard size, but I don't remember anyone) and one roll of masking tape each team. It would be placed linking tow tables 0,5m apart and then we would place 1L bottles over it to see what design would hold more. Many bridges had problems with tortion, or with the paper bending, but my idea avoided those two problems and was able to hold all the bottles available (about 20 bottles) and we started adding other stuff.
I laughed so hard when your niece knocked the ice-cream out of your hand.
DarthBil1 IKR LOL
Ows talaga ba?
Same
@@Vic_Inso filipino?
Wait when?
i dont watch because its relevant, i watch because its entertaining...
True
me to
Same
I agree with you
JoeSloppyJoe I watch it for both
Great video, small thing, had this same mouse trap challenge in my junior year in high school physics class in 1989. It was a great learning experience! Don't remember who won, we had an incredible teacher, just like Mr. Karud. Big props to him for his dedication to his students!
You are correct. I taught Industrial arts and did this beginning in 1987. I did not come up with the idea and don't know it's origins but I do know it did not begin in 1991.
This is a fantastic video, but I will say that in 8th grade my best friend and I were tasked with building a mouse trap car that didn't use a pulley system as a sort of "bonus" project. We built a tiny car, launched it with the mousetrap, and won the competition for our class. It believe it went almost double the next best vehicle's distance, and I personally built the 2nd place car.
you would be a GREAT science or tech ed teacher
Or a physics teacher
Gavin D'Souza no search anonymous
Oh I'm a anonymous member too
@@Vertense do you even know anonymous?
Hi
Lesson of the day: don't make a bet with mark
Yes that is so true
You’re really correct
Im just doing this so it Will look like People comment
: )
You welcome Eva Slyva
This was a fun high school competition back in the day. I still keep my car as a momento as it's just such a satisfying design - the comp was a speed one and we took the win. The car we made was four wheel drive and light - the four wheel drive was chosen to maximise the traction availability along with tricks to manage traction and energy. We had hypothesised about friction and traction in class, none of us had real karting or racing experience at the time but this was certainly a time where it became apparent. The result was fast enough to be challenging to time.
the longer lever arm also increased the amount of string pulled, and the smaller of the ratio of axle to wheel makes the rotations let the car go further
When you learn more in a 15min video then in 13 years school
true
Exactly
*than. Now you’ve got some grammar too 😜
fck yeah
Happy birthday to you and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play
Hey! That's me at 12:50 ! Super cool to see a Science Olympiad event highlighted on your channel! It was great to meet you and talk about my car.
Seriously
SCIOLY IS LIFE
Sweet! Congratz!
just finished my SCOILY event at 4:00
>TFW States is already over I didn't work on my teams mousetrap. I did 3D print the bearing mounts though. I think it actually got first at states.
When I was in HS I built many of them. Our rules wouldn't allow for any modifications to the trap and had overall dimension regulations so it could only be so large. Mine would go the full length of the basketball gym at the school. Great memories. Cool video
Hey Mark, Any chance you can make a video on your work bench. I think a lot of people and myself would be interested in it. It’d probably encourage people to recreate and experiment with their own science projects. Best- PS Phat Gus rules.
I wish we did something cool like this when I was in school... good job on the video! :)
We didn't even have a science fair at my school.
I was supposed to do mouse trap cars but my school canceled it.
Experimental Fun I hate u
why do you hate me?
Experimental Fun yep same
If he was my physics teacher I would skip other classes to go to his class
Future Fire ikr
Same
Future Fire he’s my teacher😂
Same
Same
I remember doing something like this in school but with bottle cars and their were two types that worked really well because we were going off a ramp aiming to get in a bin, one that worked well was light weight and hand wings to glide in so used hardly any power, the other was heavy and basically dropped in like a rock so used more power (my group was the wings one), their was this one group that tried to just copy both designs and combine them together so the heavy thing combined with the wings, so theirs didn't work well because they tried to combine two completely different methods.
WOW so nicely done. Wish I had this when I was teaching mousetrap cars years ago.
Just get an electric mousetrap and use it as a motor *modern problems require modern solutions*
I love this comment
in the case of science Olympiad at least, you're not allowed to use electronic devices
*outstanding move*
Satria Sutena haha
Solar panel 😂
Nobody: Mark: Dang it I wanted to be a physics teacher but I ended up working at nasa
Lolol definitely
Aw I wanted to be a millionare not a billionare
@DrewZull Káędîij NASA* but yeah
YourDudeBk because it is really annoying to many people when someone corrects a small issue, ‘cause it makes them feel like they can’t make mistakes or else they get a red flag. i know many people who hate that.
@@GrandpaPapi werent you the one that corrected first? and who called someone a nerd?
Love your videos and I am making a mouse trap car for mine and I decided to watch your video to get an idea of how to do it
Mark Rober, im making it, the current best for my school is 33 feet, thanks mark, we will win
Mark: Talks like a smart person Me: I don't know what you're talking about, but it seems interesting
True
shungite
@@pizzathegamer8249 J O I N U S
@@nwiiho4215 SHUNGITE
Same man I feel you
Somebody: Creates a contest that's a thing just in the USA. USA: Yay, World Record! ;-)
It's like the miss universe thing, hardly any competition when it's just earth
Somebody: Creates a contest that's a thing just in the USA. USA: Yay, World Record! ;-)
Yeah. The rest of the world just doesn’t show up to compete.
Hey Fun fact! Me and my group in a mousetrap car project got first place, thanks to this. It really helps. Thanks a lot for the ideas. Our task was the long distance car and we used the same principle as the world record type. Tip, you really need to calculate the ratio, if it’s to big the car won’t move at all. My group learned that the hard way. And everyone else in our class who tried the same principle gave up, because I would not move.
How do you mean calculate ratio? Like how do I know when it will move?
Built a pinewood derby car a long time ago and my dad gave me some of the graphite he had -- those wheels had NO resistance, nice advantage!
I remember building one of these in my 8th-grade science class. Once I finished the project, and presented it at school, my father attached Estes Model Rocket Engines to the car.
Please tell what supplies you got for the car need help for my science project
The ice cream cone slap was the funniest thing I’ve seen in awhile.
The fact that I saw this video when it came out and just today I was assigned to make a mousetrap car in my high school physics class.
Same. This is the optional assignment this quarter that counts as a major grade and my teacher will give out a ton of bonus points for furthest travelled, nicest looking design, etc.
@@samuelgunter Its not optional for me but im sure our assignments are very similar regarding the rules and such
Ive done this in 5th grade and it was very fun trying to build one and getting it to go far
Can you believe I had to watch my favorite youtuber for homework on my Mouse trap car?? :O
megamaz dang bro really
Me too lol
K
This video is a tutorial for almost all kind of rolling. I mean, it explains drag racing cars tweaks, bicycle gears/wheelsize, etc. Love the video, thx
I made one with 2 mouse traps in series with the string attached to a 2 sided fishing hook so it could be tranferred to the second bar. It was a cool idea and worked but not as well as the long armed ones.
I remember making one in highschool when I had terrible time management. I had to reach a certain distance, and all I had was cardboard and 6 hours the day before it was due. I used a thread spool as a front wheel, comically large lever arm, and the largest circle I could cut out in the back. The thing went 5x the distance of almost everyone else, only being beaten out by the super low friction speedster of my buddy. It's a cherished memory of mine.
My friend built a mousetrap car and it exploded when he tested it in competition
A.D.E 35 oh my hahahahaha
Wtf did he make it with?
wilag8er I think he meant like the spring broke and destroyed the car
Your picture makes this comment better
A.D.E 35 wow
13:30 this is how happy I imagine Mark is *ALL THE TIME* when he's learning, making, and teaching! Keep up the great work!
Hub Han Great minds think alike. I saw that and thought the very same thing as you did. I wish I had as great a mind as Mark.
I have no idea what he’s talking about but I just listen
Same
The satisfaction you get when you learn about the stuff he’s talking about
I love what you do and patiently wait for each video.Thank you for making me and my family smarter and more interested in science.
.
Was in a high school class that did this in the 1990's. The teacher had two criteria, first to 10' and longest distance traveled. So I had a car with a conical spool on the drive axle, which helps with both good starting acceleration and changing the drive ratio to stretch out the range. So I thought I was clever in trying to score well on both criteria. Turns out I wasn't clever enough... Some other kid in the class found a loophole. At the time the contest didn't stipulate that the mousetrap had to be part of the car, nor did it specify that the car must stay on the ground. So he had one of those Micro Machines toy cars and used the mousetrap to catapult it down the hallway. It flew about half the distance before bouncing off some lockers and skidding to the end of the hall. Thus insta-winning both categories, even if it wasn't in a way that was the intended nature of the contest. The teacher allowed that because he considered it fair given the provided rules, but changed the rules for the next class that did this project so no easy cheats could happen. I can only laugh about it though, since I was on friendly terms with the kid that beat my design. Nobody was allowed to copy each other, so I was wondering what strategy he had that would beat mine and I thought he was joking about it. (He wasn't wrong.) So what about my car? It ended up 4th in distance and 2nd on speed. Didn't have access to fancy bearings like others did for the distance, and only got the speed because everyone else trying for it spun their tires on the polished floor. However it did get awarded the most interesting design for having a novel approach compared to others. Everyone else thought the overall win strategy was too cheesy too.
I wish my school did things like this
absolute GENIUS
same
Kaden Furr I did this in 7th grade
I tried to do that loophole because my teacher had only listed that the rules were the mousetrap car was solely powered by a moustrap. He was mean and changed the rules for this 2 days before the project was due.
Thanks for the video.. I almost forgot I built one in HS. My wip traveled 114 ft., I'll never forget that.
Mark is better at teaching me this than school ever has
He deserves more. He literally travels soo far for just a video!😸
no crap he deserves more
Yep.
Hmmmm, you heard of Nick Robinson?
Yes
He also takes like months sometimes
al is my current physics teacher, ama.
What is your favorite demo so far
thanks for the heart mark, now i'm finally famous. angie - probably the one where he blew up the ceiling with a bottle. that one was pretty neat. cos he blew stuff up. with a bottle. will - because i have the mind of a third grader
best teacher ever or what???
Did you ever get the „Hammertreatment“?
do you like bread?
Explained mechanical advantage in five minutes with twenty or so examples better than my physics teacher did for a whole school year . . .
Seems like you have some animosity toward your teacher. Stop intentionally disrupting his class and not listening.
I think he would is a really cool, chill, inspirational, and wholesome teacher in my opinion. 10/10
I remember building mine out of legos. It impressed my Physics Teacher so much that he asked if he could take pictures of it to use for future examples. I hated him as a person, but I respect him as a teacher.
Wow.
Impressive.
Well that took an unexpected turn at the end, dang 😂😂
"I can lift 10 pounds 50 times" *has a 12 pound weight*
same thing different number
Lol
Huh
I saw that too! lol
Looks like it says 14 not 12
I love watching you because you teach me things without making it boring
Thank you for the video Mark Rober, I'm doing mouse trap racers for an engineering unit!
"I could move the earth if I had a lever strong and long enough" -Archimedes (supposedly)
That lever would have to be 3 light-years long but yeah
@@aidanbeattie8341 lol yea
@@aidanbeattie8341 well better get building
And a place to stand*
@@mrugankthatte4378 yes
I'm never going to let Mark pour me a glass of tea.
A robot to support robot to give you the part that will attach to a robot that will pour you a tea
We use to race RC cars before they came out with li-ion batteries. I generally raced stock that meant 6 cells, no ball bearing motor with less turns. I think we ran either 3 minute heats or 5 and it was a great feeling when you could get your car across the finish line and then the battery run dead on another lap or two. The goal was to use all the stored energy even if it was a crappy battery pack.
진짜 이유투버는 내가믿고 구독하고 보는 유튜버다🎉항상 재미있게 과학을 설명해주셔서감사합니다❤
Mark: Talking about Mechanical advantages Weather: RAIN! Mark: Keeps talking!
Yes
Jokes on you, I'm part of the 3.3% of people who have a school project on this
Oh lord tachanka, we are not worthy for your existence
Lucky
TheCringyGamer _ 0.3%* he said 99.7%
Same
He said 99.7% of people don't do this in their lifetime, so 0.3% of people do this in their lifetime.
Mark, your buddy, Al, in Texas said "I came up with this idea back in 1991", but my high school physics teacher was doing mousetrap cars in the mid 1980's. Some of my classmates were using vinyl 33 1/3 LP records as wheels. (Yes, there was recorded music media long before .mp3 and CDs.)
I was thinking the same thing. I entered a winning mousetrap care in a science Olympiad in 1990 and my Industrial Arts teacher had been doing them before then for years.
your has a bigger wheel, so a bigger scirconference, so just spin faster if the rotation force is aplied to the center of it and the theet are for more friction
Holy cow! Thank you for another amazing video. I have two sons studying engineering at Utah State and we all love your videos. We're going to have to have a family mousetrap car competition. and then AFTER that, I'll show them the video. Keep up the great work.
1:25 Dang, dat gurl is savage.. Edit: OMG Thank you soooo much for all the likes
SHE'S ONLY 15 YOU DISGUSTING MAN
Sergeant Hale u do know what savage is right
Don't like your own comment. ALSO I KNOW WHAT I AM TALKING ABOUT. DON'T TRY TURNING THE TABLES YOUNG MAN.
the Term savage is used as kind of like a meme type thing nowadays but it just means that someone doing an act which isn’t very brutal but if seen in a different angle can still be considered as brutal,thus the term savage
@@benandrews7403 how is that disgusting?
I love how cute the cars are!❤❤
Bro's filming in rain.. And I didn't notice the first time.. That is dedication! Keep the lessons going! I love your videos!!
The street fighter transition at 4:27 is amazing. Thank you for putting in that extra effort into your videos!
Can we get a R.I.P in the chat for Mark's ice cream
RIP
RIP
Rest in peace
RIP
Rip
Thank you we are about to have a science class on this and a compitition
should have watched this 2 years ago. We made one in middle school. One of the best ones in my class was actually built from paper! (he used paper tubes and idk about the wheels, its been 2 years after all) mine had a replaceable mouse trap and cd wheels and it did pretty well
i just love how she punches the icecream out of marks hand
questacon 😇
More of a slap but......
I look forward to working with you! We’re going to have so much fun!
Rick Smith, Jr. spoiler alert?
I
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0:31 Mark: Wait wait wait, don't leave. Me: I wasn't going to-
this also works in car engines, if you have a longer piston you will produce a lot of torque and if the piston is short then you would be able to make the engine rpm higher