Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 49PQ
A block with mass m1 hangs from a rope that is extended over an ideal pulley and attached to a second block with mass m2 that sits on a ledge slanted at an angle of 20° (Fig. P5.49). Suppose the system of blocks is initially motionless and held still, and then it is released. If m1 = 7.00 kg and m2 = 2.00 kg, find the magnitude of the acceleration of the blocks, assuming there is no friction between the second block and the ledge.
FIGURE P5.49 Problems 49 and 50.
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An athlete pulls box E using an inextensible rope P while being resisted by another inextensible rope S.
Let P be the tension force on rope P and S be the tension force on rope S. Consider particle analysis involving
only forces P and S.
The same athlete now pulls another box E of mass 63kg up an incline. The coefficients of friction between the
box and the incline are us=0.32 and µk=0.22. Consider particle analysis of the instant when P = 635N, 0 =
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An athlete pulls box E using an inextensible rope P while being resisted by another inextensible rope S.
Let P be the tension force on rope P and S be the tension force on rope S. Consider particle analysis involving
only forces P and S.
The same athlete now pulls another box E of mass 63kg up an incline. The coefficients of friction between the
box and the incline are us=0.32 and µk=0.22. Consider particle analysis of the instant when P = 635N, 0 =
10° and a = 29°. Use the indicated coordinate axes.
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Chapter 5 Solutions
Physics for Scientists and Engineers: Foundations and Connections
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