The force Pis applied to the 49-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-199 N, and (c) P-308 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, - 0.25 and 4 - 0.20, respectively. The friction force is positive if up the incline, negative if down the incline. 49 kg 20 P,-0.25 P=0.20 16" Answers: (a) F- (b) F- N (c) F- N (d) P- z z z z

The force Pis applied to the 49-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-199 N, and (c) P-308 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, - 0.25 and 4 - 0.20, respectively. The friction force is positive if up the incline, negative if down the incline. 49 kg 20 P,-0.25 P=0.20 16" Answers: (a) F- (b) F- N (c) F- N (d) P- z z 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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