The force P is applied to the 37-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 = 107 N, and (c) P = 168 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 = 0.19 and Uk = 0.16, respectively. The friction force i positive if up the incline, negative if down the incline. Answers: (a) F= (b) F= (c) F= 37 kg 12° i i i (d) P= i 21° H₂= 0.19 H₂ = 0.16 N N N N
The force P is applied to the 37-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 = 107 N, and (c) P = 168 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 = 0.19 and Uk = 0.16, respectively. The friction force i positive if up the incline, negative if down the incline. Answers: (a) F= (b) F= (c) F= 37 kg 12° i i i (d) P= i 21° H₂= 0.19 H₂ = 0.16 N N N N
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.23P: The 40-lb spool is suspended from the hanger GA and rests against a vertical wall. The center of...
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