The force P is applied to the 61-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 = 239 N, and (c) P=387 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 us = 0.27 and Uk = 0.24, respectively. The friction force is positive if up the incline, negative if down the incline. Answers: (a) F- (b) F= 61 kg (d) P= W 16° i (c) F= i 25° H, = 0.27 H₂ = 0.24 N N N N

The force P is applied to the 61-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 = 239 N, and (c) P=387 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 us = 0.27 and Uk = 0.24, respectively. The friction force is positive if up the incline, negative if down the incline. Answers: (a) F- (b) F= 61 kg (d) P= W 16° i (c) F= i 25° H, = 0.27 H₂ = 0.24 N N N N

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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