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प्रश्न
A pendulum is oscillating on either side of its rest position. The correct statement is:
विकल्प
It has only the kinetic energy at its each position.
It has the maximum kinetic energy at its extreme position.
It has the maximum potential energy at its mean position.
The sum of its kinetic and potential energy remains constant throughout the motion.
उत्तर
The sum of its kinetic and potential energy remains constant throughout the motion.
Explanation:
In accordance with the law of conservation of mechanical energy, whenever there is an interchange between potential energy and kinetic energy, the total mechanical energy remains constant.
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