alleryA rigid body in mechanical equilibrium has zero total force and zero total:
AVolume
BTorque
CMass
DSpeed
Answer & Solution
Correct answer: B. Torque
1. Zero total force stops linear acceleration.
2. Zero total torque stops angular acceleration.
3. Both are needed for equilibrium.
_Source: syllabus Physics Part I, Chapter 7, Systems of Particles and Rotational Motion._
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