15-9. The 200-kg crate rests on the ground for which thecoefficients of static and kinetic friction are µ, = 0.5 andHk =0.4, respectively. The winch delivers a horizontal towingforce T to its cable at A which varies as shown in the graph.Determine the speed of the crate when 1= 4 s. Originallythe tension in the cable is zero. Hint: First determine theforce needed to begin moving the crate.T (N)800T = 400 2-t (s)4

From the figure, using Newton's law the static equilibrium in vertical direction ΣFy=0N-W=0N=W=mg…

Answered: 15-9. The 200-kg crate rests on the…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 96A

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