V = I $\alpha$ For an Object Rotating About a Fixed Axis, Where

question 68

Multiple Choice

V = I $\alpha$ for an object rotating about a fixed axis, where $\tau$ is the net torque acting on it, I is its rotational inertia, and $\alpha$ is its angular acceleration. This expression:

• A) is the definition of torque
• B) is the definition of rotational inertia
• C) is the definition of angular acceleration
• D) follows directly from Newton's second law
• E) depends on a principle of physics that is unrelated to Newton's second law

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