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

PhysicsW.E.P.Work kinetic energy theoremMedium2 minQB

PhysicsMediumsingle choice

In the arrangement shown block A and C are of mass 2 kg and B is of unknown mass. When released, A moves downward by 0.5 m and C moves towards pulley by 0.5 m. Velocity of A after the displacement given is (friction is absent)

Options:

Answer:

Solution:

When A descends 0.5 m, C moves 0.5 m toward the pulley while B stays at the same height, so only A loses potential energy:

$2 \times 10 \times 0.5 = \frac{1}{2} (2 + 2) v^{2} \Rightarrow v^{2} = 5$

$v = 5 m/s$

Ans. (D)

Stream:JEESubject:PhysicsTopic:W.E.P.Subtopic:Work kinetic energy theorem

⏱ 2mℹ️ Source: QB

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