The force P is applied to the 44-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-162 N, and (c) P-273 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 ,-0.27 and 0.21, respectively. The friction force is positive if up the incline, negative if down the incline.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The force P is applied to the 44-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-162 N, and (c) P-273 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 s-0.27 and 0.21, respectively. The friction force is
positive if up the incline, negative if down the incline.
Answers:
(a) F-
44 kg
17'
(c) F-
i
(b) F- i
i
(d) P- i
P=0.27
P₁ = 0.21
N
N
N
N
Transcribed Image Text:The force P is applied to the 44-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-162 N, and (c) P-273 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 s-0.27 and 0.21, respectively. The friction force is positive if up the incline, negative if down the incline. Answers: (a) F- 44 kg 17' (c) F- i (b) F- i i (d) P- i P=0.27 P₁ = 0.21 N N N N
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