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Why there are questions like What is the weight of the body traveling in elevator ?.
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Weighing Scale gives reaction force to man. That reaction force is recorded by scale..
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R. W. a. R :- Reaction Force W :- Weight of Boy a :- Acceleration of elevator.
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Either elevator is rest or runs with constant velocity upward/ downward.
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a. . Apparent weight of the boy while elevator accelerates upward with a ,.
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a. . Apparent weight of the boy while elevator accelerates downward with a ,.
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My weight is not Constant.