Pulley with everyday things

Pulleys are simple machines we find all around us.
Let us build simple pulley with everyday things and understand how pulleys help us.
We will cut circles from the card sheet and paste these circles with their centers aligned.
Let's make a big hole with the thick needle. We will insert a small plastic piece of used refill. This will ensure smooth movement of pulley without any wobbling.
Needle acts as an axle around which pulley can move freely. 1 rupee coins in a plastic container is our load for this setup.
Let us use a water bottle as a stand.
I can lift 5 coins in the container with my hand and place it on the box. For this action, I have to apply a force of more than 0.2 N in upward direction
This is called load and I am applying effort to move the load.
Instead I can use pulley and pull the container upwards. This time also I have to use the same force. But the direction of force is downwards.
Pulley can change direction of the force though the same force needs to be applied. This is good when we have to lift a heavy load.
How can we be sure that force is slightly greater than the load ? Let us attach another container and find out. With 5 coins, the container on the left side is slightly lifted. With the 6th coin, it comes up. There is some friction near the pulley which has to be taken care of as well.
Let us add one more pulley and water bottle. Pulley at the top is fixed, while pulley with coins can move freely. With 10 coins in this container, only 5 coins are needed to lift it up and the 6th coin to lift it completely. Last coin takes care of friction as well as some weight of the second pulley.
With pulley, we need less effort to lift heavy load. But there is a catch. With half the effort, we can lift full load only half the distance. Let us do some analysis.
With a single fixed pulley, when forces are the same on both sides, distance covered by both containers is the same.
When one pulley is moving and the other one fixed, container on the right side covers a distance of 14 cm while container on the left side covers a distance of 7 cm. We could lift a load of 10 coins with the help of 6 coins of effort but only half the distance.
Try these different variations to understand more about working of pulleys.
Thank You.
#pulley
#simpleMachines
#mechanics
#movablePulley

[@55Ramius]

Good demo of pulleys and I like how you often show how to make your own. I could afford to buy some but if somebody can not, you have not left them out. : )

[@MomSpaghetti]

Dr Stone is the reason why I'm here ...

[@valewind4665]

Omg same 😂

[@Black_soulss]

Me 2...😂😂

[@karunkumar2942]

Yes

[@karunkumar2942]

How he lifted a whole tree using pullies

[@kotaro-san]

Thank you for this video it helped me with understanding simple machines

[@RavindraGodbole]

Glad it helped

[@thusharmanoj8858]

This guy knows what he is doing

[@obito797]

This is soooo gooddd i had no idea what a moveable pulley is i thought it was portable..lol I'm sure I'll get full marks in the machines chapter thanks to u haha ... I'll share this to my friends too :)

[@priyankas9926]

Great demonstration. Thanks

[@suganthym1438]

Excellent demonstration. Thanks

[@LLawliet-yf2fy]

Thank you

[@symphonyspammer]

Yes..........pulley diameter DOES matter.
Thankyou for this project:)

[@xicsegeographyphysicsbysan6981]

Excellent excellent video

[@omyadav1279]

Nice desion system

[@adwitiyasrivastava3486]

very helpful video

[@padminikhimlin1676]

Super demo

[@불닭볶음면-l2l]

Oh man, this is what I have been looking for
Thanks for the video
From one of mechanical Engineering students

[@RavindraGodbole]

Glad it was helpful!

[@sahasra3462]

Great.....🙂

[@knowledgeworld8772]

Very nice

[@lakshkarnawat75]

I like very much

[@rupinderkaur9813]

thanks

[@paddy6582]

please give description for all the
items

[@RavindraGodbole]

Ok. Will take care. Please refer to the description of the video below

[@outspoken6383]

Awesome 👍🏾👍🏾👍🏾

[@RavindraGodbole]

Thanks 👍

[@godbloodyyt1344]

Nice

[@yashp_s7764]

Thankss

[@foxinfflive2272]

is this movabl pully

[@RavindraGodbole]

Yes

[@virendrachoudhary5754]

👌👌👍👍🙏🙏

[@obianujui8062]

👍🏾👐🏾

[@gavinfernandes6465]

Hi vrinda

[@sehrishshahnawaz2757]

In this u r showing two pulleys or one I m unable to understand

[@RavindraGodbole]

All combinations are shown. Any specific doubt u have ?

[@sehrishshahnawaz2757]

@@RavindraGodbole no but it is difficult I m young for this if u can make any easy so plz

[@mrunalkapure4787]

What can we use as a stand instead of bottle

[@RavindraGodbole]

Use wall , chair, table as support

[@sehrishshahnawaz2757]

It is difficult can me make it easier with less items

[@RavindraGodbole]

Ok . Will try

[@kareemsalessi]

Good experiments:: I recently posted some pulley experiments in the comments section under TH-cam::: ("Simple-Experiment-Proves-Apollos-FAKE")

[@foxfetterworth7942]

I wonder if you've got a scientific explanation for if and how that RIDICULOUSLY DISTRACTING background noise contributes one damned thing to understanding how pulleys work.