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A pendulum is oscillating on either side of its rest position. Explain the energy changes that take place in the oscillating pendulum. How does the mechanical energy remain constant in it? Draw necessary diagram.
A pendulum is oscillating on either side of its rest position. Explain the energy changes that take place in the oscillating pendulum. How does the mechanical energy remain constant in it? Draw necessary diagram.
Class 10 | ICSE | Physics | Selina | Work Energy
A pendulum is oscillating on either side of its rest position. Explain the energy changes that take place in the oscillating pendulum. How does the mechanical energy remain constant in it? Draw necessary diagram.

Solutions:

When the bob swings from A to B, the kinetic energy declines and the potential energy increases until it reaches its maximum at B, where it is momentarily at rest.

From B to A, the potential energy transforms into kinetic energy once more, and the process repeats.

As a result, the bob has potential energy at extreme positions B or C and kinetic energy at resting position A when swinging.

At an intermediate position (between A and B or A and C), the bob possesses both kinetic and potential energy, and the sum of both energies (i.e. total mechanical energy) remains constant throughout the swing.

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