1. A solid steel rod of length 120-cm and mass 450 grams, is rotated about its center with an angular acceleration 23 rad/s2. What is the moment of inertia of the rod? What is the net torque acting on the rod?
2. A man is holding an 8.00-kg vacuum cleaner at arm's length, a distance of 0.550 m from his shoulder. What is the torque on the shoulder joint if the arm is held at 30° below the horizontal?
3. The drive chain in a bicycle is applying a torque of 0.950 Nm to the wheel of the bicycle. The wheel has a moment of inertia of 0.150 kgm2. What is the angular acceleration of the wheel?
4. An 82.0 kg- diver stands at the edge of a 5.00 m diving board, which is supported by two pillars 1.60 m apart. Find the force exerted by each pillar. The diving board is symmetric and has a mass of 50.0 kg.