Question
Assertion

Two identical blocks are placed over a rough inclined plane. One block is given an upward velocity and the other in downward direction. If and the ratio of magnitudes of accelerations of two blocks is 2 : 1.

Reason

The desired ratio is

Two identical blocks are placed over a rough inclined plane. One block is given an upward velocity and the other in downward direction. If and the ratio of magnitudes of accelerations of two blocks is 2 : 1.

A

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

B

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

C

Assertion is correct but Reason is incorrect

D

Both Assertion and Reason are incorrect

Hard

Solution

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Correct option is D)

Block moving upwards: Component of gravity Force & Friction both will be downwards.
Therefore acceleration,
                                       
                                       
                                       
                                       


Block moving downwards: Component of gravity force & Ffriction will be downwards & upwards respectively.
Therefore acceleration,

Ratio is:
Therefore both Assertion and Reason are incorrect.

Solve any question of Laws of Motion with:-

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