when a mass m is Attached to the spring of force constant k, then the spring stretches by l. if the mass oscillates with amplitude l, the max potential energy in the spring is: a.mgl/2 b. mgl

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when a mass m is Attached to the spring of force constant k, then the spring stretches by l. if the mass oscillates with amplitude l, the max potential energy in the spring is: a.mgl/2 b. mgl

Deepali Kolte 23rd Apr, 2020

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Answer (1)

Tushar Karmakar 10th May, 2020

Just apply work energy theorem to this question and you will get the answer easily.

First equate Work done by gravitational force + Work Done by Spring force = Change in Kinetic energy

Now you find the x. Then according by the formula of potential energy you can easily find the maximum potential energy and hence your answer will be matched.

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