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Concepts Of Physics MCQ Edition [Volume 1]PhysicsNewton's Laws of Motion

A particle remains at rest when observed from a certain frame. We can conclude that

Options

  1. Athe frame might be inertial, but the resultant force on the particle is zero
  2. Bthe resultant force acting on the particle is zero
  3. Cthe frame is an inertial frame
  4. Dthe frame might be noninertial, but there is a nonzero resultant force

Correct answer

D. the frame might be noninertial, but there is a nonzero resultant force

Step-by-step solution

If a particle is at rest in a given frame of reference, its acceleration with respect to that frame is zero. If the frame is an inertial frame, the acceleration of the particle with respect to the ground is zero. According to Newton's second law, the net real force acting on the particle must be zero. If the frame is a non-inertial frame accelerating with a ₀ with respect to the ground, the particle must also have an acceleration a ₀ with respect to the ground to remain at rest in the non-inertial frame. Thus, the

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