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A book of mass m is lying on a table. It is then placed on the top shelf of a book rack by three different persons. The paths followed by the book as it is carried by three different persons is shown in the given figure.

The work done by the gravitational force on the book is maximum for

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It is same for all the three paths

Path 1

Path 2

Path 3

answer is D.

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Detailed Solution

The work done by the gravitational force is independent upon path followed its depends upon only end points

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