The force P is applied to the 31-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 = 113 N, and (c) P = 170 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 = 0.23 and Uk = 0.17, respectively. The friction force i positive if up the incline, negative if down the incline. Answers: (a) F= (c) F= (d) 31 kg (b) F= i P = 14° i i i 19° H₂=0.23 H₁ = 0.17 N N N N

The force P is applied to the 31-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 = 113 N, and (c) P = 170 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 = 0.23 and Uk = 0.17, respectively. The friction force i positive if up the incline, negative if down the incline. Answers: (a) F= (c) F= (d) 31 kg (b) F= i P = 14° i i i 19° H₂=0.23 H₁ = 0.17 N N N N

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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