# The period of a physical pendulum is 2pi √(I/mgd) , where I is the…

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**Question:**

The period of a physical pendulum is 2pi √(I/mgd) , where I is the moment of inertia about the pivot point and d is the distance from the pivot point to the center of mass. A circular hoop hangs from a nail on a barn wall. The mass of the hoop is 3 kg and its radius is 20 cm. if it is displaced slightly by a passing breeze what is the period of the resulting oscillations?

A. 1.3 s

B. 1.8 s

C. 2.1s

D. 1.0s

E. 0.63s

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