The tractor pulls on the fixed tree stump. If the coefficient of static friction between the rear wheels and the ground is ?_s = 0.6, determine if the rear wheels slip or the front wheels lift off the ground as the engine provides torque to the rear wheels. What is the torque needed to cause this motion? The front wheels are free to roll. The tractor weighs 2500 lb and has a center of gravity at G.

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2 ft 2 ft -5 ft--3 ft-