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A 5- kg body is suspendel from a spring ...

A 5- kg body is suspendel from a spring - balance , and an identical body is balanced on a pan of a physical balance . If both the balances are kept in an elevator , then what would happen in each case when the elevator is moving with an upward acceleration ?

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The reading of the spring balance will increase , but there will be no effect on the equilibrium of common physical balance .
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