A 2.5 kg block is initially at rest on a horizontal surface. A horizontal force `vecF` of magnitude 6.0 N and a vertical force `vecP` are then applied to the block (Fig. 6-31). The coefficients of friction for the block and surface are `mu = 0.40 and mu = 0.25`. Determine the magnitude of the frictional force acting on the block if the magnitude of `vecP` is (a) 8.0 N. (b) 10 N, and (c) 12 N

Explanation

`(a) 6.0N, (b) 3.625N, (c) 3.125N`