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One end of a horizontal, massless spring is attached to a wall. A mass of 0.30...

One end of a horizontal, massless spring is attached to a wall. A mass of 0.30 kg is attached to the other end of the spring and rests on a table. The mass is displaced 0.30 m from its equilibrium position and released. It has a speed of 0.040 m/s as it passes through its equilibrium position. In the absence of friction, what is the total mechanical energy of the system?

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Answer #1

Concept -at equilibrium position, the velocity is maximum and potential energy is zero. Hence the total energy of the system will be equal to the kinetic energy at equilibrium.

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