A 0.600 kg block is held against a compressed spring of stiffness 28.0 N/m and c

Question

A 0.600 kg block is held against a compressed spring of stiffness 28.0 N/m and compression 1.05 m on a 22.62 degree incline that is 2.60 m long. The coefficient of kinetic friction between the block and inclined is 0.400. 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. (The block is not attached to the spring - so it is unable to push on the block after it reaches its equilibrium length.) What is the work done by gravity on the block along the length of the incline? What is the work done by kinetic friction along the length of the incline? With what speed does the block leave the incline? (Please use cos(22.62 degree ) 12/13 and sin(22.62 degree ) 5/13.)

Explanation / Answer

using conservation of energy we have v =12.99 m/s

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