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Unformatted text preview: Chapter 4, Problem 58 A rugby player runs with the ball directly toward his opponent's goal, along the positive direction of an x axis. He
can legally pass the ball to a teammate as long as the ball's velocity relative to the field does not have a positive x
component. Suppose the player runs at speed 4.6 m/s relative to the field while he passes the ball with velocity
gap relative to himself. If gap has magnitude 8.7 m/s, what is the smallest angle it can have (relative to the positive direction of the x axis) for the pass to be legal?
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:» VBP — *VPF} + VBF J Chapter 5, Problem 7 Page 1 of 1 I Chapter 5, Problem 7 1 While two forces act on it, a particle is to move at the constant velocity ; = (2.7 m/s):  (5.0 m/s) One of the forces is F: 1 = (2.561549045 N); + (6.08505358 N)’J‘.. What is the other force? Number 2.561549045 l 6.08505358j Units N L! ME TO Answer i1: Signiﬁcant digits not applicable; exact number, no tolerance
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l:th : F, +15, : o «a F?  'l’. http://edugen.wiley.com/edugen/shared/assignment/test/qpreview.uni?id=5699&operation=... 2/7/2005 Lnapter 3, rrooiem l l rage I OI l I Chapter 5, Problem 11 1 Figure 535 shows an arrangement in which four disks are suspended by cords. The longer, top cord loops over a
frictionless pulley and pulls with a force of magnitude 96.6 N on the wall to which it is attached. The tensions in the
shorter cords are T1 = 67.0 N, T2 = 47.9 N, and T3 = 7.2 N. What are the masses of (a) disk A, (b) disk B, (c) disk C, and (d) disk D? I“: $351332. Fra IOOAES AmarawS (a) Number 3.020408163 Units kg
(b) Number 1.948979592 Units kg
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‘3 w 3 Chapter 5, Problem 24 In Fig. 539, a crate of mass m = 118 kg is pushed at constant speed up a frictionless ramp (9 = 29.0°) by a
horizontal force What are the magnitudes of (a) F and (b) the farce on the crate from the ramp? Fig. 539 / Problem 24. i (a) Number 641.002987099445 Units N
(b) Number 1322.174644088447 Units N Answeral: ‘
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negligible mass. The girl exerts a horizontal 5.7 N force on the rope. What are the acceleration magnitudes of (a)
the sled and (b) the girl? (c) How far from the girl's initial position do they meet? (a) Number 0.730769230769 Units m/sAz
(b) Number 0.154054054054 Units m/sAz
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along the positive direction of an x axis. The mass of the barge is 9200 kg, and die magnitude of its acceleration is 0.13 m/sz. What are (a) the magnitude and (b) the direction of the force on the barge from the water? (Measure
the direction clockwise from the direction of motion, and give your angle to U16 nearest degree.) Fig. 544
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l U a 'r m E; a ’3 unapter D, rroolem DU rug: 1 m A I Chapter 5, Problem 50 1 Figure 553 shows a man sitting in a bosun's chair that dangles from a massless rope, which runs over a massless,
frictionless pulley and back down to the man's hand. The combined mass of man and chair is 65.7 kg. With what
force magnitude must the man pull on the rope if he is to rise (a) with a constant velocity and (b) with an upward acceleration of 1.30 m/sz? (Hint: A freebody diagram can really help.) Problem continues below. Fig. 553
Problem 50. If the rope on the right extends to the ground and is pulled by a coworker, with what force magnitude must the co— worker pull for the man to rise (c) with a constant velocity and (d) with an upward acceleration of 1.30 m/sz? What is the magnitude of the force on the ceiling from the pulley system in (e) part a (f) part b, (9) part c, and (h) part
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(9) Number 1287.72 Units N (3 1WM (h) Number 1458.54 Units N bilaptcl 3, 110016111 )‘f [456 1 U1 1 st—s I Chapter 5, Problem 54 I Figure 556 shows a box of mass m2 = 1.5 kg on a frictionless plane inclined at angle 9 = 30°. It is connected by a
cord of negligible mass to a box of mass m1 = 3.2 kg on a horizontal frictionless surface. The pulley is frictionless and massless. (a) If the magnitude of the horizontal force fl" is 1.5 N, what is the tension in the connecting cord?
(b) What is the largest value the magnitude of I? may have without the connecting cord becoming slack? Fig. 556
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 Fall '06
 Kletzing
 Force, Friction, Mass

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