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The log has mass M and rests on the ground for which the coefficients of static and kinetic friction are { μ }_{ s } and { μ }_{ k } 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 = { t }_{ 2 }  . Originally the tension in the cable is zero. Hint: First determine the force needed to begin moving the log. Given: M = 500 kg , { t }_{ 1 } = 3 s , { μ }_{ s } = 0.5 , { T }_{ 1 }  = 1800 N , { μ }_{ k } = 0.4 , g = { 9.81 m/s }^{ 2 } , { t }_{ 2 }  = 5 s

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