A body is in equilibrium if the net force on it is
Correct answer: B. 0 N.
- A. - 1 N.
- B. 0 N.
- C. 1⁄2 N.
- D. 1 N.
Explanation
An object is in equilibrium when the net force acting upon it is 0 N. This means that all the forces cancel each other out, resulting in no acceleration of the object. Option B is correct because a net force of 0 N signifies balanced forces, a requirement for equilibrium. Option A is incorrect as a force of -1 N would lead to a net acceleration in the negative direction. Option C is incorrect because a force of 1⁄2 N would also lead to acceleration, disrupting equilibrium. Lastly, Option D is incorrect because a net force of 1 N indicates the presence of an unbalanced force, leading to motion rather than equilibrium.
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About Newton's Laws of Motion
Newton’s laws explain inertia, the relation between net force and acceleration, and action-reaction pairs. Questions involve free-body diagrams, balanced and unbalanced forces, F = ma, force as the rate of change of momentum, and identifying genuine third-law pairs, which act on different bodies.
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