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Question

If the net force acting on a body be zero, then will the body remain necessarily in rest position?


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Solution

Force:

  1. Force is an external cause in the form of push or pulls, which produces or tries to produce motion in a body at rest.
  2. Or tries to stop a moving body or change the direction of motion of the body.

Explanation:

  1. Mathematically, Newton’s second law of motion in drived form states that
  2. F=m×a. Where F is force, m is mass, and a is acceleration.
  3. When F =0, then m×a =0
  4. But m0, so acceleration should be zero.
  5. If there is no acceleration, the body will move with whatever speed it has before. This speed may be any value or zero.
  6. At zero speed, the body remains at rest. So it does not mean that the object should be at rest

Thus, it is not necessary that the body will be at rest if the net forces acting on a body are zero.


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