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Physics
A body is initially at rest. It undergoes one- dimensional motion with constant acceleration. The power delivered to it at time ‘t’ is proportional to
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Q. A body is initially at rest. It undergoes one- dimensional motion with constant acceleration. The power delivered to it at time ‘t’ is proportional to
KCET
KCET 2020
Work, Energy and Power
A
$t^{1/2}$
19%
B
t
41%
C
$t^{3/2}$
26%
D
$t^{2}$
15%
Solution:
As we know,
$P = Fv$
where, $P$ is the power, $F$ is the force and $v$ is the velocity.
or, $P =$ mav
or, $P = ma ^{2} t$
or, $P \propto t$