A 0.55 kg book moves vertically upwarda distance of 10 m, and thenvertically downward 10 m, returning toits initial position.
(a) How much work is done by gravity during the upwardmotion of the book?
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(b) How much work is done by gravity during the downward motion ofthe book?
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(c) What is the total work done on the book by gravity during thecomplete round trip?
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(d) On the basis of your answer to part (c), would you say that thegravitational force is conservative or nonconservative?