alleryStart learning →In rotational motion, the cause of angular acceleration is:
AThe net torque
BThe net force
CThe net momentum
DNet displacement
Answer & Solution
Correct answer: A. The net torque
1. The rotational second law says the same thing as the translational one, in rotational language.
2. In rotational motion, net torque is the cause of angular acceleration.
3. That is exactly as in Newton's second law of motion for rotation.
4. A net force with no lever arm about the axis produces no angular acceleration.
_Source: OpenStax College Physics for AP(R) Courses 2e (CC BY 4.0), Ch 10 'Rotational Motion and Angular Momentum', sections 10.1-10.7_
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