Thanks for saying this. This is the topic that got me diffident in physics. Clearly, it was due to lack if illustrations like this. I was lost in thoughts wondering how the drawing on the board practically works and I lost the whole idea on how it makes things easier. God bless Sir for sharing.

My 5 grader loves it! Thanks

Weel and axle

Love

Well I saw this in my 10th std..I'm lucky 😅

He didnt even explain anything

there is a mistake

@@Son96601 seriously

so why does it take less force to pull the weight attached in the pully can you please explain it to me??

@@shouryaupadhyaya2036 it's because in the 2nd one, the tension is getting applied from both left and right side whereas in the first one tension was only coming from 1 place which was applied by us

@@shouryaupadhyaya2036 because work = force x distance, if you exert a smaller force over a longer distance, it will be equal to the work done when you exert a large force over shorter distance. With hydraulic systems or pulleys, the output distance is longer than the input distance.

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@@funsciencedemos sir here u should use the word mechanicle advantage it will surely ." Sone pe suhaaga"🎂= 😀love from india

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Also there could be a distinction between a _force_ and a _mass._

Jarrod: Your explanation is WAY better than what's in the video.

Nice explaination

This comment has made me understand more than anything else I have seen

@@sonofjimmyray I'm glad it helped. :) I wish I'd proofed it before posting it though! It's not written well. :)

Same

Charlie's Gaming and CHALLENGES!!! Same

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Ok thank you so much for the follow I love you

sorry i can`t so sorry but your amazing

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same!

Glad you enjoyed it!

@@funsciencedemos :)

😑

Hello, and thanks for your comment! You can easily translate the subtitles into your native language by first turning on the English ones and clicking auto-translate, then selecting it from the drop down list. Science is so cool!

Glad it was helpful!

You are clearly a jack ass. So glad you will never become anything in life.

@@bishopguitars sorry if I wasnt clear. In physics work has a very specific definition, and this video actually does a great job of showing that definition. Say for example you have an object that takes 5 Newton's of force to move and you want to move it 10 meters. That would mean you need to do 50 Newton meters of work to move it that distance. A simple machine such as a pulley allows you to exert less force over a greater distance to move that object the same 10 meters. For example with a pulley I could exert 2.5 Newton's over 20 meters to move that object 10 meters. The work isn't lessened or easier than before because I'm doing the exact same amount of work. The difference is I'm not needing to use as much force thus it seems easier from a practical point. Obviously for the weights involved in the video you could just pick them up and move them, but when your talking things that exert more force than you can physically being able to exert less force over greater distance becomes a great advantage.

@@inigomontoya4109 I understand what you're saying - the presenter is using the term "work" colloquially, not in a scientific context, and saying that "work is easier" in a scientific sense is wrong (because work = force*distance, and doesn't change). A more precise way of saying it is the same amount of work requires less force but twice the "distance" (rope pulled). If you need to lift a 1000g weight 1m in the air, you can either do that by using the one pulley arrangement and pulling the rope 1m with 9.8N, or by pulling 2 m of rope with 4.9N. So what he's saying is "work is easier" to the layman, but scientists would say "work requires less force".

inigo montoya Yes, work is the same. The person used less force, but the other pulleys made up for it.

Thanks a lot for this comment! W = f x d remember people

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Glad you enjoyed it!

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I get it, nice.

we are so glad to help!

Glad it was helpful!

Thank you so much for your feedback on our science video. And thanks for spreading science! Please keep in mind our channel, FunScienceDemos, has over 150 science demonstrations for every important idea in science. Here is our channel link: kzfaq.info . If you are a teacher, we would love to hear how you are using this video. Science is so great!

sh

I know right

This completes the above video, its a very important note while explaining pulleys...…

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Thank you so much for your feedback on our science video. And thanks for spreading science! Please keep in mind our channel, FunScienceDemos, has over 150 science demonstrations for every important idea in science. Here is our channel link: kzfaq.info . If you are a teacher, we would love to hear how you are using this video. Science is so cool!

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we are so glad! science is so cool!

too bad it did not help with your spelling :)

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