1. The problem statement, all variables and given/known data The moment of inertia for an arm or leg can be expressed as I = amL2, where a is a unitless number that depends on the axis of rotation and the geometry of the limb and L is the distance to the center of mass. Say that a person has arms that are 27.80 cm in length and legs that are 38.92 cm in length and that both sets of limbs swing with a period of 1.40 s. Assume that the mass is distributed evenly over the length for both the arm and leg. **Calculate the value of A for the person's arms. 2. Relevant equations I am not sure of any equations that include Amplitude. Here is one that relates to the problem, but cannot be used to solve A: T = 2pi(sqrt(I/mgL)) T= period given (1.4 s) I = ? L = given 27.80 g = gravity 9.81 m =? 3. The attempt at a solution I'm just really confused on how to go about this problem? Any advice?