The first condition of equilibrium requires that the net external force be:
AExactly zero
BVery large
CStraight up
DEver growing
Answer & Solution
Correct answer: A. Exactly zero
1. Any unbalanced force would accelerate the body.
2. Equilibrium forbids that acceleration.
3. So the net force must be exactly zero.
_Source: OpenStax University Physics Volume 1, Chapter 12, Static Equilibrium and Elasticity._
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