A person is standing in an elevator. In which situation, he experiences weight loss? (a) When the elevator moves upward with constant acceleration (b) When the elevator moves downward with constant acceleration (c) When the elevator moves upward with uniform velocity (d) When the elevator moves downward with uniform velocity

Answer: (b). Apparent weight N = m(g - a) when acceleration a is downward, so N mg; uniform velocity gives N = mg. So the answer is (b) when the elevator moves downward with constant acceleration.

A person is standing in an elevator. In which situation, he… | JEE Main 2022 (26 Jun, Shift 1)

Q10JEE Main 2022 · 26 JUN · SHIFT 1Easy

Apparent Weight & Lift

A person is standing in an elevator. In which situation, he experiences weight loss?

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Answer: (b)

Apparent weight $N = m(g - a)$ when acceleration $a$ is downward, so $N < mg$ .
Upward acceleration gives $N > mg$ ; uniform velocity gives $N = mg$ .
So the answer is (b) when the elevator moves downward with constant acceleration.

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