A) Mass of the book and the time taken to do work
B) Weight of the book and the height of the book shelf
C) Height of the book shelf and the time taken to do work
D) Mass of the book, height of the book shelf and the time taken to do work
Correct Answer: B
Solution :
Work done \[=mg\times h=\] weight \[\times \] height.You need to login to perform this action.
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