A system that stays balanced while rotating at constant angular velocity satisfies:
AOnly the first one
BNo condition at all
CThe second condition
DNeither condition
Answer & Solution
Correct answer: C. The second condition
1. Equilibrium does not require the object to be motionless.
2. The second condition necessary to achieve equilibrium involves avoiding accelerated rotation.
3. That means maintaining a constant angular velocity.
4. So constant rotation is consistent with the second condition being met.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 9 'Statics and Torque', sections 9.1-9.5_
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