A Physical Pendulum Is Composed of a Sphere Whose Center

Multiple Choice

A physical pendulum is composed of a sphere whose center of gravity is attached to a thin rod of negligible mass. The sphere has a moment of inertia of 2/5 MR² about its center. The mass of the sphere is 2.00 kg, and it has a radius of 30.0 cm. The length of the rod is 50.0 cm. The period (for small-amplitude oscillations) of the physical pendulum is

A) 2.45 sec.
B) 2.02 sec.
C) 1.98 sec.
D) 1.52 sec.
E) 1.25 sec.