A bowling ball rolls without slipping up a ramp that slopes upward at an angle β to the horizontal. Treat the ball as a uniform, solid sphere, ignoring the finger holes.

Part A:

What is the acceleration of the center of mass of the ball?

Express your answer in terms of the variable β and appropriate constants.

Part B:

What minimum coefficient of static friction is needed to prevent slipping?

Express your answer in terms of the variable β and appropriate constants.