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15-33.
T (N)
The log has a mass of 500 kg and rests on the ground for
which the coefficients of static and kinetic friction are
Hy = 0.5 and ug = 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.
1800
T = 200 ?
АТ

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