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

PhysicsW.E.P.Conservative force & potential energyMedium2 minQB

PhysicsMediummultiple choice

Initially spring is compressed by 0.5 m and surface is smooth. Choose the correct option(s):-

Answer:

A, B, C

Solution:

$U = \frac{1}{2} k x^{2} = \frac{1}{2} (100) (0.5)^{2} = 12.5 J$

(A) true.

Block B is against the wall, so it stays at rest while the spring pushes A. All the spring energy goes to A:

$K E_{A} = 12.5 J$

(B) true.

B does not move, so

$W_{a ll} = Δ K E_{B} = 0$

Stream:JEESubject:PhysicsTopic:W.E.P.Subtopic:Conservative force & potential energy

⏱ 2mℹ️ Source: QB

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