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Translational equilibrium requires the total external force to be:

AExactly zero
BAt a maximum
CKept constant
DKept positive
Answer & Solution
Correct answer: A. Exactly zero
1. A rigid body in equilibrium must not accelerate as a whole. 2. That needs the forces on it to cancel. 3. So the total external force is zero. _Source: syllabus Physics Part I, Chapter 7, Systems of Particles and Rotational Motion._
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