You lift a heavy book from the floor of the room and keep it in the book-shelf having a height 2 m. In this process you take 5 seconds. The work done by you will depend upon
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a
Mass of the book and time taken
b
Weight of the book and height of the book-shelf
c
Height of the book-shelf and time taken
d
Mass of the book, height of the book-shelf and time taken
answer is B.
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Detailed Solution
Work done = Force × displacement= Weight of the book × Height of the book shelf