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A mass m is attached to a string of length r and is swung in a vertical circle. The mass is released from the top of the circle. The study focuses on the forces acting on the mass and the concepts of centripetal force, tension, and energy transformations.
The potential energy of a spring is the energy stored in it when it's stretched or compressed. It describes the work done to stretch the spring and depends on the spring constant k and the distance stretched. The potential energy of a spring is dependent on the stretch or squeeze of the spring, but not on the path taken.
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