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A body of mass `m` is acceleratad uniformaly from rest to a speed `v` in a time `T` . The instanseous power delivered to the body as a function of time is given byA. `(1)/(2) m (v)/(t_(1)) t^(2)`B. `m (v)/(t_(1)) t^(2)`C. `(1)/(2) ((mv)/(t_(1)))^(2) t^(2)`D. `(1)/(2) m (v^(2))/(t_(1)^(2)) t^(2)` |
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Answer» Work done `= F xx s` `= ma xx (1)/(2) at^(2) [From x = ut + (1)/(2) at^(2)]` `:. W = (1)/(2) ma^(2) t^(2) = (1)/(2) m ((v)/(t_(1)))^(2) t^(2) [As a = (v)/(t_(1))]` |
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