An Irregularly Shaped Object Is Attached to an Axle So

Multiple Choice

An irregularly shaped object is attached to an axle so that it may be spun. If a torque of 250 N·m must be applied for 1.25 s in order to give it a rotation period of 0.10 s, what is its moment of inertia?

A) 5.0 kg m²
B) 31 kg m²
C) 4.0 kg m²
D) 25 kg m²