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 = 118 N, and (c) P = 189 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 = 0.17 and k = 0.12, respectively. The friction force is positive if up the incline, negative if down the incline. Answers: (a) F= (b) F= 44 kg 10° (d) P= i i (c) F= i i 15° H₂=0.17 H₁ = 0.12 N N N N

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 = 118 N, and (c) P = 189 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 = 0.17 and k = 0.12, respectively. The friction force is positive if up the incline, negative if down the incline. Answers: (a) F= (b) F= 44 kg 10° (d) P= i i (c) F= i i 15° H₂=0.17 H₁ = 0.12 N N N N

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 61P

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