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 (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? The static and kinetic coefficients of friction between the block and the incline are u, -0.19 and 4,-0.13, respectively. The friction forcer is positive if up the incline, negative if down the incline. Answers (a) F- (b) F 12 (c) F- 45 kg (d) P. 27. 0.19 0.13 4 N N N N
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 (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? The static and kinetic coefficients of friction between the block and the incline are u, -0.19 and 4,-0.13, respectively. The friction forcer is positive if up the incline, negative if down the incline. Answers (a) F- (b) F 12 (c) F- 45 kg (d) P. 27. 0.19 0.13 4 N N N N
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Transcribed Image Text: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 the
surface 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? The
static and kinetic coefficients of friction between the block and the incline are u,-0.19 and -0.13, respectively. The friction force is
positive if up the incline, negative if down the incline.
Answers
(a) F-
(b) F
(c) F=
(d) P.
45 kg
12:
-0.19
0.13
N
N
z z
N
N
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