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Newton's Law of Gravitation

Assertion :In...

Question

Assertion :In the falling object example, if you include the effect of air resistance during the fall and see the situation after the object hits the ground and stays there, the total mechanical energy is not conserved. Reason: The general law of energy conservation, however, is still applicable but the total mechanical energy is not conserved

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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C

Assertion is correct but Reason is incorrect

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D

Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Let us consider the falling object example , While it is falling , there will be gravitational force acting on it and the mechanical energy is conserved.
If we include the effect of air resistance during the fall and see the simulation after the object hits the ground and stays there , the total mechanical energy is not conserved.
The general law of energy conservation is applicable but the mechanical energy is not conserved
Therefore correct option is $A$

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