IRING=mr2, IDISK=mr2/2, 9=10 m/s2 1. A 2-kg grinding wheel 50.0 cm in diameter is spinning counterclockwise at a rate of 20.0 radians per second. When the power to the grinder is turned off, the grinding wheel slows with constant angular acceleration and takes 80.0 s to come to a rest. A) (5 pts) How many revolutions did the wheel make during the time it was coming to rest? B) (2 pts) What is the magnitude of the torque exerted on the grinding wheel? 2. (5 pts) In the figure, two blocks, of masses 2.00 kg and 3.00 kg, are connected by a light string that passes over a frictionless pulley of moment of inertia 1=0.25 kg - m and radius 50.0 cm. The coefficient of friction for the tabletop is 1/6. The blocks are released from rest, find the speed of the upper block after it has moved 2.00 m across the table.. 3.00 kg 2.00 kg