physics
posted by Anonymous .
A fireman tosses his 0.863kg hat onto a peg, where it oscillates as a physical pendulum. If the center of mass of the hat is 8.32 cm from the pivot point, and its period of oscillation is 0.762 s, what is the moment of inertia of the hat about the pivot point?

I= (MgDT^2)/4PI^2