Q&A for How to Build a Pulley

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Question

What are the 3 types of pulleys?

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The 3 types are fixed, moveable, and compound. A fixed pulley has a wheel and axis that stay in one place, like on a flag pole. Moveable pulleys, such as those used in cranes and elevators, can move up and down. A compound pulley combines fixed and moveable pulleys.

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Question

How does a pulley make work easier?

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Pulleys help support the weight of an object you are lifting and reduce the amount of force you need to lift it. The more wheels on your pulley, the less force you need to exert!

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Question

What are some common uses for pulleys?

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Pulleys are used in devices such as elevators, construction cranes, and flagpoles. Many weightlifting machines also involve pulleys that you pull down on to lift the weights.

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Question

Are there any easily found materials from my home that I could use?

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You can use any clothes hanger that could fit a spool. Keep in mind it should be able to spin freely on whatever you use. If you don't have rope, you can twist some yarn together and use that instead.

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Question

Can I use any kind of hanger?

Community Answer

You can use any closed wire hanger, like the one displayed there.

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Question

How can I build a pulley with two or more wheels to make it a force multiplier?

Community Answer

Put all four wheels on opposite axes so that the perpetual discharge of the load will cause the force to conjugate the momentum, and the force will become greater than before, thereby creating a force multiplier.

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Question

Where can i find a spool?

Community Answer

You can find a spool at a local fabric/thread store. There should be one near your location, but if not you can often find spools at thrift stores or on auction sites.

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Question

Is there anything other than a spool that I can use for this?

Community Answer

Maybe you can hang a paper clip on the hanger and pull the string through the hole in the paperclip.

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Question

How do I make a pulley with opposite wheels?

Community Answer

Put all four wheels on opposite axes so that the perpetual discharge of the load will cause the force to conjugate the momentum, and the force will become greater than before, thereby creating a force multiplier.

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Question

How do I make a heavy-duty pulley out of metal?

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Use a thicker hanger, a metal loop for the spool and a chain instead of thread.

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Question

Where can I get a thread spool?

Community Answer

You can get it at your nearest hardware store. If not, then try getting it at a large variety store or online.

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Question

What can I do if my pulley is unstable?

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Use a more balanced hangar or spool- glue object in place- you may need to lighten the load.

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