The stepped disk weighs 20 lb and its moment of inertia is / = 0.6 slug-fl2. It rolls on t...

The stepped disk weighs 20 lb and its moment of inertia is / = 0.6 slug-fl2. It rolls on the horizontal surface.

The disk is initially stationary with the spring unstreched. and at / = 0 a constant force F = 10 lb is applied as shown. Determine the position of the center of the disk as a function of time. (See Example 21.6.)