The force P is applied to the 52-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 = 245 N, and (c) P = 361 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 = 0.28 and μk = 0.23, respectively. The friction force is positive if up the incline, negative if down the incline. The force P is applied to the 52-kg block when it is at rest. Determine the magnitude and direction of the friction force exerted by thesurface on the block if (a) P = 0, (b) P = 245 N, and (c) P = 361 N. (d) What value of P is required to initiate motion up the incline? Thestatic and kinetic coefficients of friction between the block and the incline are u = 0.28 and u = 0.23, respectively. The friction force ispositive if up the incline, negative if down the incline.52 kg26°H,= 0.28H = 0.2317Answers:(a) F=i(b) F=iN(c) F=iN(d) P=i

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The force P is applied to the 52-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 = 245 N, and (c) P = 361 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 u = 0.28 and uk = 0.23, respectively. The friction force is positive if up the incline, negative if down the incline. 52 kg 26° H,= 0.28 HE = 0.23 17 Answers: (a) F = (b) F= i N (c) F = i (d) P= i N z z

The force P is applied to the 52-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 = 245 N, and (c) P = 361 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 u = 0.28 and uk = 0.23, respectively. The friction force is positive if up the incline, negative if down the incline. 52 kg 26° H,= 0.28 HE = 0.23 17 Answers: (a) F = (b) F= i N (c) F = i (d) P= i N z z

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 7.71P: The 600-lb cable spool is placed on a frictionless spindle that has been driven into the ground. If...

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