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A body of mass 30kg is hung by a spring ...

A body of mass `30kg` is hung by a spring balance in a lift. What would be the reading of the balance when the lift is
(i) descending with a constant velocity of `5m//s`
(ii) ascending with a constant velocity of `10m//s` .

Text Solution

Verified by Experts

The correct Answer is:
`30kg wt`.
When velocity is constant, acc. `a =0`
`:. R = m(g+-a) = mg = 30 kg wt` .
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