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For the cases shown in Fig. Q6.8, the object is released

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 8DQ Chapter 6

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 8DQ

For the cases shown in ?Fig. Q6.8?, the object is released from rest at the top and feels no friction or air resistance. In which (if any) cases will the mass have (i) the greatest speed at the bottom and (ii) the most work done on it by the time it reaches the bottom?

Step-by-Step Solution:

Solution 8DQ Step 1: (a).Consider the energy conservation principle to calculate greatest speed of the ball at bottom U +iK = i + K f f Here U and K are the potential and kinetic energy of the ball at initial and final stage. Where U = mihand K = 0 i 2 U f 0 and K = 1/2fmv mgh =½ mv 2 v = 2gh Here m is mass of ball,g is gravity and h is height. Hence,the bottom speed of ball in all cases same that is 2gh .

Step 2 of 2

Chapter 6, Problem 8DQ is Solved
Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

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For the cases shown in Fig. Q6.8, the object is released

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