A metal sign for a car dealership is a thin, uniform right triangle with base length b and height h. The sign has mass M.
(a) What is the moment of inertia of the sign for rotation about the side of length h?
(b) If M = 5.40 kg, b = 1.60 m, and h = 1.20 m, what is the kinetic energy of the sign when it is rotating about an axis along the 1.20-m side at 2.00 rev/s?