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A light particle of mass m is connected to another very heavy particle by means of a light inextensible string that passes over a smooth pulley. The reading of the spring balance is approxinately A. `4 mg`B. `gt gt mg`C. zeroD. `2 mg` |
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Answer» Correct Answer - A `T = (2m_(1)m_(2)g)/(m_(1) + m_(2))` `m_(1) = m` `m_(2) =` very heavy mass (M) `T = (2mg)/((m+ M)/(M))` `T = (2mg)/(1 + (m)/(M))` `T ~~ 2mg" " m lt lt M` spring balance will measure `2T = 2 xx 2mg = 4 mg` |
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