15-33. The log has a mass of 500 kg and rests on the

Chapter 15, Problem 15-33

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15-33. The log has a mass of 500 kg and rests on the ground for which the coefficients of static and kinetic friction are /xv = 0.5 and /xk = 0.4. respectively. The winch delivers a horizontal towing force T to its cable at A which varies as shown in the graph. Determine the speed of the log when t = 5 s. Originally the tension in the cable is zero. Hint: First determine the force needed to begin moving the log.

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