Question: The 5 0 - 1 b block rests on the rough surface for which the coefficient of kinetic friction is k = 0 . 2

The 50-1b block rests on the rough surface for which the coefficient of kinetic friction is k=0.2. A force F=(40+s2)lb, where s is in ft, acts on the block in the direction shown. The spring is originally unstretched
The 5 0 - 1 b block rests on the rough surface

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