1) Give an example in which a small force exerts a large torque. Give another example in which a large force exerts a small torque.
2) Consider a hollow sphere and a solid sphere with the same radius R and mass M, which sphere has the larger rotational inertia. Explain why.
3) A pingpong ball is tied to a string. For the same amount of torque which one shall rotate faster, if a longer string is used or a shorter one.