A physical pendulum is composed of a disc whose center of gravity is attached to a thin rod. The disc has a moment of inertia of 1?2 MR2. The mass of the disc is 500 gm and has a radius of 4.00 cm. The length of the rod is 50.0 cm. The period of the physical pendulum is
A. 1.24 sec.
B. 1.42 sec.
C. 1.74 sec.
D. 1.90 sec.
E. 2.25 sec.
B. 1.42 sec.
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