A Horizontal Mass-Spring System and Energy Due in 6 hours, 39 minutes Equilibriu

Question

A Horizontal Mass-Spring System and Energy Due in 6 hours, 39 minutes Equilibrium A block rests on a horizontal, frictionless table. It is attached to a spring set into motion. The picture above shows snapshots of the block at 5 different labelled locations during the motion. The two extreme locations Points A and B) represent the two extremes of the motion of the block. and Point C represents the equilibrium position. Evaluate each statement below. Zero Positive Negative Negative The potential energy of the spring at location C is The kinetic energy of the block at location C is__. The kinetic energy of the block at location D is The kinetic energy of the block at location B is The potential energy of the Negative spring at location D is Submit Answer Incorrect. Tries 5/10 Previous Tries

Explanation / Answer

Since C is the equilibrium position, the displacement of the spring at C is zero and so the Potential Energy is zero.

Let right side be the positive direction and the left be the negative direction. Then, the Kinetic Energy will be positive at C.

Kinetic Energy at D is smaller than Kinetic Energy at C as the spring gains potential energy and yet the kinetic energy at D will be positive.

The Potential Energy is the maximum at B and therefore, the kinetic energy at B is zero.

The Potential Energy at D is positive as the displacement is positive.

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