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April 25, 2014

Homework Help: physics

Posted by roger on Wednesday, January 21, 2009 at 10:36pm.

A worker uses awhell and axle with inner radius of 20cm and outer of 50 cm to lift a 2400N object.
a) What is the mechanical advantage of the simple machine?
b) What force must the worker exert to lift the object?

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