Question 196: Work, Energy and Power & Circular Motion

Question

A body of mass $m$ is accelerated uniformly from rest to a speed $v$ in a time $T.$ The instantaneous power delivered to the body as a function of time is given by

Accepted Answer

$u = 0;v = u + aT;v = aT$
Instantaneous power $ = F 	imes v = m.\,a.\,at = m.{a^2}.t$
$	herefore$ Instantaneous power $ = {{m{v^2}t} \over {{T^2}}}$

Answer

${{m{v^2}} \over {{T^2}}}.{t^2}$

Answer

${{m{v^2}} \over {{T^2}}}.t$

Answer

${1 \over 2}{{m{v^2}} \over {{T^2}}}.{t^2}$

Answer

${1 \over 2}{{m{v^2}} \over {{T^2}}}.t$

Work, Energy and Power & Circular Motion

A body of mass m is accelerated uniformly from rest to a speed v in a time T. The instantaneous power delivered to the body as a function of time is given by

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