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Question

If a carpet is beaten with a stick, dust comes out. Why does this happen?


A

First law of motion

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B

Second law of motion

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C

Third law of motion

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D

Newton's law cannot explain this behaviour

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Solution

The correct option is A

First law of motion


The inertia of an object tends to resist any change in its state of rest or state of motion. When a carpet is beaten with a stick, then it comes in motion. But, the dust particles try to resist a change in their state of rest.

According to Newton's first law of motion, the dust particles stay in a state of rest, while the carpet moves. Hence, the dust particles come out of carpet.


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