Physics
For a body to be in equilibrium, which of the following conditions is necessary?
- Its momentum is zero.
- Its kinetic energy is zero.
- Its velocity is zero.
- lts acceleration is zero.
Force
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Answer
Its acceleration is zero.
Reason — For a body to be in equilibrium, the net force acting on it must be zero and according to Newton’s second law, when the resultant force is zero, the acceleration of the body becomes zero so the body may be at rest or move with uniform velocity.
Therefore, the necessary condition for equilibrium is that its acceleration is zero.
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