By the end of this chapter you should be able to

 define angular momentum and calculate its value for a rotating object;

 describe rotational inertia and calculate the moment of inertia for objects with simple shapes;

 explain why objects can change their rotational velocities by applying the conservation of angular momentum;

 define center of mass and apply it to practical situations;

 define and calculate rotational energy; and

 explain why rolling objects of different shapes are accelerated differently.
