JEE Main 2016 Physics question

PhysicsOscillationsJEE Main 2016

A particle performs simple harmonic motion with amplitude A. Its speed is trebled at the instant that it is at a distance from equilibrium position. The new amplitude of the motion is:

Answer: (D)

Solution

At x = 2A/3, . With 3v: $ =

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Question ID VK-008857