The horizontal force P = 67 N is applied to the upper block with the system initially stationary. The block masses are ma = 13 kg and mg = 7 kg. Determine the magnitudes of the frictions forces F1 (between block A and the ground) and F2 (between blocks A and B) for the following conditions on the coefficients of static friction: (a) µ1 = 0.40, H2 = 0.37 and (b) µ1 = 0.26, µ2 = 0.48. Assume that the coefficients of kinetic friction are 71 percent of the static values. P 20° A

The horizontal force P = 67 N is applied to the upper block with the system initially stationary. The block masses are ma = 13 kg and mg = 7 kg. Determine the magnitudes of the frictions forces F1 (between block A and the ground) and F2 (between blocks A and B) for the following conditions on the coefficients of static friction: (a) µ1 = 0.40, H2 = 0.37 and (b) µ1 = 0.26, µ2 = 0.48. Assume that the coefficients of kinetic friction are 71 percent of the static values. P 20° A

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 7.72P

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