Rotational Kinetic Energy Practice Test

A solid disk and a spoked wheel have the same mass $$M$$ and the same outer radius $$R$$. Both are accelerated from rest to the same final angular velocity $$\omega$$. Which object has more rotational kinetic energy, and why?

A uniform rod of length $$L$$ and mass $$M$$ is pivoted at one end and released from a horizontal position. What is its rotational kinetic energy when it reaches the vertical position? The rotational inertia of a rod about its end is $$I = \frac{1}{3}ML^2$$. Use $$g$$ for the acceleration due to gravity.