A body is moving unidirectionally under the influence of a source of constant power. Its displacement in time t is proportional toa. t⁽¹÷²⁾b. tc. t⁽³÷²⁾d. t²
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we know, power is the dot product of force and velocity.
e.g., Power = force × velocity
dimension of force =
dimension of velocity =
so, P =
P =
P is constant and m is mass so, it also remains constant for specific body.
so, = constant
or, L²/T³ = constant
or, L² = constant × T³
or,
hence, displacement is directly proportional to t^3/2 .
hence, option c is correct.
e.g., Power = force × velocity
dimension of force =
dimension of velocity =
so, P =
P =
P is constant and m is mass so, it also remains constant for specific body.
so, = constant
or, L²/T³ = constant
or, L² = constant × T³
or,
hence, displacement is directly proportional to t^3/2 .
hence, option c is correct.
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