The 50-lb block rests on the rough surface for which the coefficient of kinetic friction is µ̟ = 0.2. A force F = 100 lb acts on the block in the direction shown. If the spring is originally unstretched (s determine the power developed by the force the instant the block has moved s = 1.5 ft. 0) and the block is at rest, F.

Elements Of Electromagnetics
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3. The 50-lb block rests on the rough surface for which the
coefficient of kinetic friction is u, = 0.2. A force F
acts on the block in the direction shown. If the spring is
originally unstretched (s
determine the power developed by the force the instant the
block has moved s =
100 lb
0) and the block is at rest,
1.5 ft.
F.
30°
k = 20 lb/ft
Transcribed Image Text:3. The 50-lb block rests on the rough surface for which the coefficient of kinetic friction is u, = 0.2. A force F acts on the block in the direction shown. If the spring is originally unstretched (s determine the power developed by the force the instant the block has moved s = 100 lb 0) and the block is at rest, 1.5 ft. F. 30° k = 20 lb/ft
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