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August 29, 2014

Homework Help: Physics

Posted by Alphonse on Monday, October 15, 2012 at 8:56pm.

A 0.40kg block is held against a compressed spring of stiffness 68.2N/m and compression 0.64m parallel to a 24 degree incline that is 1.27m long.  The coefficient of kinetic friction between the block and the incline is 0.34.  The external force holding the block against the compressed spring is then removed, and the compressed spring pushes the block up the incline from rest. What is the work done by gravity on the block along the length of the incline?

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