pullies

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tvspence
Posts: 1
Joined: Mon May 05, 2008 4:57 pm
Occupation: dad
Project Question: i am looking for a formula that i can judge the force needed to lift an object, then be able to find out what the force is as pullies are added (up to 4)
Project Due Date: ASAP
Project Status: I am conducting my experiment

pullies

Post by tvspence »

i am looking for a formula that will give me the force used to lift an object 10' weighing 10 pounds. then adding a pully and another ect... up to 4.
barretttomlinson
Former Expert
Posts: 932
Joined: Wed Oct 03, 2007 12:24 am

Re: pullies

Post by barretttomlinson »

Hi,

Here is site with a clear explanation:
http://www.howstuffworks.com/pulley.htm

Best regards,
Barrett Tomlinson
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