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HallsofIvy
#7
Dec15-08, 06:52 PM
Math
Emeritus
Sci Advisor
Thanks
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And g is the acceleration due to gravity, 9.81 m/s2, so what is the weight of the book, mg?

And lifting it a tota vertical distance of 3.5 m (NOT 1.1+ 3.5 m. Do you see why?) what work is done on the book?