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

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

PhysicsMediummultiple choice

An ideal spring with spring-constant k is hung from the ceiling and a block of mass M is attached to its lower end. The mass is released with the spring initially unstretched. Then :-

Options:(select one or more)

Answer:

B, C

Solution:

The block executes SHM about the equilibrium extension $x_{0} = M g / k$ , oscillating between the unstretched point and $2 M g / k$ .

Maximum extension is $2 M g / k$ (A wrong); speed is maximum at equilibrium, after falling $M g / k$ (B correct, D wrong); it returns to the release point with zero speed (C correct).

Ans. (B,C)

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

⏱ 2mℹ️ Source: QB

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