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Block A in Fig. P5.76 weighs 60.0 N. The coefficient of

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

Solution for problem 72P Chapter 5

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 72P

Block A in ?Fig. P5.76? weighs 60.0 N. The coefficient of static friction between the block and the surface on which it rests is 0.25. The weight w is 12.0 N, and the system is in equilibrium. (a) Find the friction force exerted on block A. (b) Find the maximum weight w for which the system will remain in equilibrium.

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Solution 72P a)The system is in equilibrium Apply the Newton’s first law to block A,to the hanging weight and the knot where the cords meet.Target are the two forces In free diagram of the hanging block F yma y Equate the vertical forces T w = 0 3 T 3 12 N In free diagram of the knot F yma y Equate the vertical forces T 3 w = 0 T 3 12 N Equate the horizontal forces F =ma y y 0 T 2in 45 T =30 T T 2 30 = 0.707 sin...

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Chapter 5, Problem 72P is Solved
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Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

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Block A in Fig. P5.76 weighs 60.0 N. The coefficient of