1. Your arm weighs about 34 Newtons and is about 63 centimeters long. As you walk, you let your arm swing back and forth like a pendulum. (a) What is the period of the motion? (b) What are the maximum velocity and acceleration of your arm assuming that your arm swings through approximately 30 degrees between its most forward and most backward positions? Hint: The rotational inertia of a uniform cylinder of length L and mass m rotating about one end is I = ng