How do Pulleys Work?

By themselves, pulleys don't do much. But when they work together, they provide something called mechanical advantage!
Want to see more content? Check out our other videos at astrocampschool.org/blog/

[@charlestaylor3195]

Thank you. Believe it or not I watched several videos before this one and none of them explained how, even with demonstrations, pulleys work. I could have saved so much time if they explained the weight is half as much because there are two ropes lifting the weight, plus you explained the length of the rope. Physics teachers rambled on for 15 minutes and didn't mention these two key facts.

[@AstrocampOrg]

No problem! Once you start adding pulleys and more rope, it becomes way easier to lift things up!

[@MechanicalEI]

Cool video Astrocamp, Great explanation on how pulleys work. Thanks for uploading!

[@sljj9106]

I'm a teacher, this is so helpful, thank you!

[@charlesjohnson-qc6hj]

Thank you,,, for not making this video "stupid long"... Right to the point is always helpful...

[@4STEVEJOY34]

Yes! But, music is to load and you didn't show the rope going through all the pulleys.

[@Darkatious]

I knew how they worked, but now I know the science behind it. Thank you

[@Beagle21]

Oh I am so glad Scott Baio found some work.

[@4-2-3-1Footy]

Short sweet and simple, great video

[@Arya-cs7kj]

Thank you!

[@DogeMahHits]

Subscribed because this channel is so helpful

[@cotton3349]

Great video! Thank you!

[@FlushtheSystem]

Great Video guys.

[@magibenyamin5866]

Thx this helped me a lot

[@robloxwithmarzies8940]

Thank you!!

[@austincurran8025]

Cool vid guys, I like how you used W = Fx D, I was hoping you would get more into the actual physics of it, like how it actually works. But other than that, great stuff.

[@Moonlight76876]

Thank you❗

[@kaleabeyohanes9692]

Well explained !

[@undeadstarfish4908]

awesome video

[@jishnudayanidhi9326]

Thank you dude now I can explain pulleys for my science exhibition

[@kahlospirit24]

Great explanation. Thanks.
Anyone able to help me?
I want to use a pulley to raise a parachute onto a ridge line and avoid needing to undo the ridge line.
What could I use to lock the rope off once the parachute is hoisted, locked both in horizontal position along the ridge line and also vertically once raised by the Pully? itself.
For vertical locking, would either clam cleat or cam cleat work?

[@Magician12345]

the thing that confuses me is saying that increasing distance reduces force. if i had a rope to pull a heavy thing but just had it go really far and pulled it in a straight line the same amount of force would be necessary than if there were no ropes

[@brycecannon2503]

Thanks Scott and Smitty! I think I will use this in my 8th grade classroom :D

[@rawnoon1616]

You can do the same thing with 1 pulley as you did with 2. Just tie of one end of the rope to frame and have weight hanging between the tie off and the pulley.

[@thegamingfire597]

Thank u I need this for school

[@michaelbanty5322]

Same omg lol

[@NeilTheBoss12]

Dr. Stone?

[@J4RBOA]

Yup

[@BigSunshine55]

Hahaha yes

[@SlimeThe1st]

Yep need to learn it just in case

[@hidejico588]

lolll, holy shit, yup. :'D

[@northfire4079]

YOOO WE IN HERE BOIS!!!

[@ScrawneyRonnie]

Thanks.

[@SquatSimp]

Is there a way to have an on the fly modular pulley system? One where you can use a 2:1 advantage and then change it to a 1:1 advantage with minimal effort for actually changing the cable/rope routing?

[@shanzmky]

I'm late but you earned a sub.

[@user-vt6bx5ps9k]

that really help me in lerrning

[@ThePrincessnowy]

This is awesome

[@user-zs2vt5yw3d]

Cool, you have MacMiller in your Garage.

[@ary-0906]

I watched this for school.. lololol

[@juceworldGio]

Me to

[@sahilaryal6969]

Do the wheel of pulley have to always rotate? Can there be a pulley which doesnot rotate and the rope just slides through the circumference of it? Will such pulley give mechanical advantage?

[@melancholiac]

Good point and not at all obvious. The pulley, having bearings at its centre, reduces friction. It would work if it DIDN'T rotate, but friction -- of rope sliding against pulley -- would be greater.

[@youdontknowme2973]

thank you, i'm not failing physics anymore

[@Nickcr-px4zs]

Nice

[@thecoach1683]

good video but the music to voice ratio is 4:1. it's hard to hear him.

[@StagnantMizu]

awesome now I can die in peace

[@hobsdigree2]

So in theory it's possible to flick my finger and move a vehicle, though I'd need to flick it a hell of a lot of times to move anywhere of a substantial distance

[@chastaine813]

in order to flick your finger, I'm assuming you'd need an ungodly amount of rope and your finger flick would have to travel a long ways.

[@hobsdigree2]

@@chastaine813 well, I guess what I'm thinking, is what's stopping someone from putting enough pulleys together and just using a small sterling motor to power a vehicle

[@GroovyAnthropomorph]

@@hobsdigree2 bruh u just blew my mind...i really wonder if thats possible

[@dangkhoanguyen8795]

i see that ted mosby switched from architecture to physics

[@stevee8698]

Why did he call you SCAT

[@jasonarnoldpepito4220]

Fucking magic I tell you

[@toastedmarshmellow5800]

didnt help. why does it take less force

[@hgboone3]

Politely I think your schooling is wrong... It is not split up between these two ropes... Is it not the mechanical advantage held within the circumference of the pulley wheel.. so correctly you should say that the wait is split up between the leaver advantage of the pulley wheels...

[@fluxyxd6267]

my teacher assigned this 420 likes lol

[@markkulyas2418]

It's hard enough to hear with echo in the room and then you lay music over the top of it. Why does every TH-camr have to think that he is Steven Spielberg.

[@jorgeruiz3802]

Mrs. Beast?

[@Breyinator]

Who's watching in 2021? lol

[@ihtsarl9115]

you didn't show the pullys and it was v quick

[@FUNKYKOLEMADINA]

So if you had 200 pulleys it pulls it’s self and 🥴puts power back into the grid 🤷🏽‍♂️🤦🏽‍♂️😂😂😂😂

[@enso_freestyle_create]

not a machine tho

[@anthonypape6862]

Not totally accurate. You put in the same amount of work regardless of how many pulleys and ropes because you have to pull that much farther

[@supreetitripathy6286]

Thank you!