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An object of mass m, initially at rest u...

An object of mass m, initially at rest under the action of a constant force F attains a velocity v in time t. Then, the average power supplied to mass is

Text Solution

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`W = F xx S = F = 1/2 F xx F/m t^2 = (F^2t^2)/(2m)`
Power `P = vecF cdot vecv = F(u + at) = F(0 + at) = Fat = F xx F/m t = (F^2)/(2m) t`.
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