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JEE Main Physics question

PhysicsLaws of MotionJEE Main

Observer O₁ is in a lift going upwards and O₂ is standing on the ground. Both apply Newton's laws correctly (including any pseudo-force needed in the non-inertial lift frame) and measure the normal reaction on a body resting on the lift floor. Then

Answer: (A)

Solution

The normal reaction is a real, physically measurable contact force; as long as each observer correctly applies Newton's laws in their

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Question ID VK-153023