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Chapter 08, Problem 003 You drop a 2.90 kg book to a friend who stands on the ground at distance D = 11.0 m below. If your friends outstretched hands are at distance d = 1.50 m above the ground (see the figure), (a) how much work Wg does the gravitational force do on the book as it drops to her hands? (b) what is the change ain the gravitational potential energy of the book-Earth system during the drop? If the gravitational potential energy U of that system is taken to be zero at ground level, what is U (c) when the book is released and (d) when it reaches her hands? Now take U to be 100 J at ground level and again find (e) wo, (f ) Δυ, (g) u at the release point, and (h) u at her hands. Units (a) Number (b) Number (c) Number (d) Number (e) Number (f) Number (g) Number (h) Number Units Units Units Units Units Units Units
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Potential eneggg of g is de consevaive Hsh tea) e. ス70.71 J c)Patertiaenesyy when bok in her d eadhes u= +2.671 41294 | U:142.67 J

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