could could not en 3 could not 10. Part Two: Practice problems 1. Suppose you had a hoop that had a mass of 12 kg with a radius of 3 m. If it started at rest it of stres but accelerated to a speed of 8.4 rev/s in 9.5 seconds, what is its acceleration? What was the torque required to accelerate it? What is its kinetic energy? lisian lay 2. If you have a wheel with a mass 2 kg and a radius of 1.2 m and it is going at 20 rev/s, how long does it take to slow down to rest after going through 825 radians of angular displacement (assume constant acceleration)? How much torque was applied to do this? 3. If you have a 5 kg disk with a radius of 3 m at rest, what acceleration would it have if you have ? applied a torque of 2.5 Nm? After 5 seconds, how fast is it rotating? What energy does it 4. If you have a 4 m rod rotated about its center, what is the moment of inertia if it has a acceleration? mass of 10 kg? If you have a force of 15 N applied to one of its ends, what is its angular