Power developed by the force

Reference no: EM1384988

The 50-lb block rests on the rough surface for which the coefficient of kinetic friction is 0.2. A force F = (40 + s2) lb, where s is in ft, acts on the block in the direction shown. If the spring is originally unstretched (s = 0) and the block is at rest, determine the power developed by the force the instant the block has moved.

s = 1.5 ft.
theta=30 degrees
k=20lb/ft
Fcos(theta)>block>spring

Reference no: EM1384988

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