The force Pis applied to the 45-kg block when it is at rest. Determine the magnitude and direction of the friction force exerted by thesurface on the block if (o) P-0, (b) P-138 N, and (c) P-217 N. (d) What value of P is required to initiate motion up the incline? Thestatic and kinetic coefficients of friction between the block and the incline are u,-0.19 and -0.13, respectively. The friction force ispositive if up the incline, negative if down the incline.Answers(a) F-(b) F(c) F=(d) P.45 kg12:-0.190.13NNz zNN

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