The force P is applied to the 45-kg block when it is at rest. Determine the magnitude and direction of the friction force exerted by the surface on the block if (a) P = 0, (b) P = 190 N, and (c) P = 268 N. (d)
What value of P is required to initiate motion up the incline?
The static and kinetic coefficients of friction between the block and the incline are μs = 0.25 and μk = 0.22, respectively. The friction force is positive if up the incline, negative if down the incline.
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The force P is applied to the 45-kg block when it is at rest. Determine the magnitude and direction...
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