InterviewSolution
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InterviewSolution
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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 upsilon^(2)t)/(T^(2))`B. `(1)/(2)(m upsilon^(2)t)/(T^(2))`C. `(m upsilon^(2))/(T^(2))t`D. `(m upsilon^(2)t^(2))/(T^(2))` |
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Answer» Correct Answer - C Here, `u=0,a=(upsilon-u)/(T)=(upsilon)/(T), F=ma=(m upsilon)/(T)` Instataneous velocity, `Deltaupsilon=a DeltaT=at=(upsilont)/(T)` Instataneous power, `P=F Deltaupsilon=(m upsilon)/(T)xx( upsilont)/(T)=(m upsilon^(2)t)/(T^(2))` |
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