Question

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

• 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 1

The correct option is B

Weight of the book and height of the book-shelf

Work done = Force $\times$ displacement

= Weight of the book $\times$ Height of the book shelf