Question 186: 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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