PHYSICS · Single correct · AP · Physics 1: Algebra-based · Torque and Rotational Dynamics · Torque and Rotational Dynamics
Problem
For any rigid object of total mass M, which axis will always yield the smallest possible rotational inertia?
(a) An axis located at the geometric center of the object, even if that point is not its center of mass
(b) Any axis that passes through the center of mass of the object
(c) An axis positioned where the object’s thickness (radius) is least
(d) A vertical axis that minimizes the torque of the object’s weight (its moment arm relative to gravity)