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Q. A 60.0kg mass is suspended from a rope which is threaded over a mass less pulley and then attached to a hook on a vertical wall. Draw or describe free-body diagram for the mass and another for the hook and show how each is in equilibrium. Calculate the tension in each part of the rope.

Q. The velocity of a particle moving in the xy plane is given by = (5.5 t - 4.5 t2) + 8.8, with in meters per second and t (> 0) in seconds. (a) What is the acceleration when t = 4.7 s? (b) When (if ever) is the acceleration zero? (c) When (if ever) does the speed equal 10 m/s?

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