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A body of mass 15 kg is hung by a spring...

A body of mass 15 kg is hung by a spring balance in a lift. What would be the reading of the balance when (i) the lift is ascending with an acceleration of `2ms^(-2)` (ii) descending with the same acceleration (iii) descending with a constant velocity of `2ms^(-1)`.? Take g = 10 `ms^(-2)`.

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