Power supplied to a particle of mass 2 kg varies with time as P = 3 t 2 2 W . Here t is in second. velocity of particle at t = 0 is v = 0. The velocity of particle at time t = 2s will be –

P = dK dt dK = P dt, 1 2 mv 2 = ∫ 0 2 3 2 t 2 dt v = 2 m/s

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Physics - W.E.P. Question with Solution | TestHub

PhysicsW.E.P.PowerEasy2 minPYQ_2020

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Power supplied to a particle of mass 2 kg varies with time as $P = \frac{3 t^{2}}{2} W$ . Here t is in second. velocity of particle at t = 0 is v = 0. The velocity of particle at time t = 2s will be –

Options:

Answer:

Solution:

$P = \frac{dK}{dt}$

dK = P dt,

$\frac{1}{2} {mv}^{2} = \int_{0}^{2} \frac{3}{2} t^{2} dt$

v = 2 m/s

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:W.E.P.Subtopic:Power

⏱ 2mℹ️ Source: PYQ_2020

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