1
Question
When a body falls on the ground from the top of a building and stops, the law of conservation of energy is violated.
When a body falls on the ground from the top of a building and stops, the law of conservation of energy is violated.
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Solution
The correct option is B False
Initially, when the body is at a particular height, it only contains potential energy. When the body falls on the ground, its potential energy keeps on decreasing and is continuously converted into kinetic energy. The mechanical energy which is the sum of kinetic energy and potential energy remains constant at every point during free fall. Therefore, the law of conservation of energy is not violated.
False
Initially, when the body is at a particular height, it only contains potential energy. When the body falls on the ground, its potential energy keeps on decreasing and is continuously converted into kinetic energy. The mechanical energy which is the sum of kinetic energy and potential energy remains constant at every point during free fall. Therefore, the law of conservation of energy is not violated.
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