Two bodies A and B have the same mass and rotate about the same axis

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Torque and Rotational Dynamics · Torque and Rotational Dynamics

Problem

Two bodies A and B have the same mass and rotate about the same axis. If the moment of inertia of body A is twice that of body B, what is the value of the ratio

k_{A}/k_{B}

of their radii of gyration? (a)

0.707

(b)

1.414

(c)

2.0

(d)

0.5

Related theory

Moment of Inertia

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