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JEE Main Physics question

PhysicsLaws of MotionJEE Main

An elevator and its load have a total mass of 800 kg. The elevator is originally moving downward at 10 ms⁻¹; it slows down to stop with constant acceleration in a distance of 25 m. Find the tension T in the supporting cable while the elevator is being brought to rest. (Take g = 10 ms⁻²)

Answer: (C)

Solution

Deceleration magnitude a = v²/2s = 100/50 = 2 ms⁻² (directed upward, since

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Question ID VK-152988