To determine The minimum work the student has to do to keep all the books in vertical stack. Explanation Given that the student has six text book each having a thickness of 4.0 cm , and weight of 30 N . Write the expression for total work done by the student. W = Δ U (I) Here, W is the work done by the student, and Δ U is the sum of potential energy of each textbook. Since all the textbooks are on the surface already, in order to keep the second text book on top of the first text book the student needs to raise the center of gravity of the second textbook to a distance equal to the thickness of the textbook. Thus the height of the 2 nd text is 4 cm , height of third text is 8 cm , height of fourth text is 12 cm , height of fifth text is 16 cm , height of sixth text is 20 m . Use the above condition in equation (I)

7th Edition

ISBN: 9780321601834

Author: Jerry D. Wilson, Anthony J. Buffa, Bo Lou

Publisher: Addison-Wesley

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Chapter 5, Problem 43E

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The minimum work the student has to do to keep all the books in vertical stack.

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Chapter 5, Problem 42E

Chapter 5, Problem 44E

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