alleryStart learning →The first condition necessary to achieve equilibrium is that the system's net external force is:
AExactly zero
BAt a maximum
CNegative
DTwice as big
Answer & Solution
Correct answer: A. Exactly zero
1. Equilibrium is stated as a pair of conditions.
2. The first condition necessary to achieve equilibrium is already familiar.
3. The net external force on the system must be zero.
4. A second condition then deals with rotation.
_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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