EBK PHYSICS FUNDAMENTALS
2nd Edition
ISBN: 9780100265493
Author: Coletta
Publisher: YUZU
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Chapter 5, Problem 3P
To determine
To Calculate: The force that must be applied for holding the bulletin board.
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The two blocks (m= 16 kg and M = 88 kg) are not attached to each other.The coefficient of static friction between the blocks is ms =0.38, but the surface beneath the larger block is frictionless. What is the minimum magnitude of the horizontal force required to keep the smaller block from slipping down the larger block?
A picture frame hung against a wall is suspended by two wires attached to its upper corners. If the two wires make the same angle with the vertical, what must this angle be if the tension in each wire is equal to 0.75 of the weight of the frame?
A metal ring of weight 120 N can slide up or down a vertical rod. The ring is attached by a cable to the ceiling (at the angle of 65° with respect to the ceiling) as shown in the figure. Assuming the static friction coefficient of 0.600 between the ring and the rod, find the minimal tension in the cable that will prevent the ring from sliding down the rod and thus keep it in place,
a. 128 N
b. 114 N
c. 103 N
d. 96 N
e. 91 N
Chapter 5 Solutions
EBK PHYSICS FUNDAMENTALS
Ch. 5 - Prob. 1QCh. 5 - Prob. 2QCh. 5 - Prob. 3QCh. 5 - Prob. 4QCh. 5 - Prob. 5QCh. 5 - Prob. 6QCh. 5 - Prob. 7QCh. 5 - Prob. 8QCh. 5 - Prob. 9QCh. 5 - Prob. 10Q
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- A One end of a metal rod of weight Fg and length L presses against a corner between a wall and the floor (Fig. P14.64). A rope is attached to the other end of the rod. Find the magnitude of the tension in the rope if the angle between the rod and the rope is 90.arrow_forwardA 20.0-kg horizontal plank 4.00 m long rests on two supports, one at the left end and a second 1.00 m from the right end. What is the magnitude of the force exerted on the plank by the support near the right end? (a) 32.0 N (b) 45.2 N (c) 112 N (d) 131 N (e) 98.2 Narrow_forwardA 20.0-kg horizontal plank 4.00 in long rests on two supports, one at the left end and a second 1.00 m from the right end. What is the magnitude of the force exerted on the plank by the support near the right end? (a) 32.0 N (b) 45.2 N (c) 112 N (d) 131 N (e) 98.2 Narrow_forward
- The two blocks (m = 13 kg and M = 90 kg) in the figure are not attached to each other. The coefficient of static friction between the blocks is μs = 0.44, but the surface beneath the larger block is frictionless. What is the minimum magnitude of the horizontal force F required to keep the smaller block from slipping down the larger block?arrow_forwardIn the figure, horizontal scaffold 2, with uniform mass m2 = 29 kg and length L2 = 2.3 m, hangs from horizontal scaffold 1, with uniform mass m1 = 54 kg. A 17 kg box of nails lies on scaffold 2, centered at distance d = 0.80 m from the left end. What is the tension T in the cable indicated?arrow_forwardAn object weighing √3kg is placed on a horizontal rough plane as shown in the figure. A force F is applied to the bottom so that it is oblique 30° horizontally. The maximum value that can be applied to the force F to keep the object motionless is (the coefficient of friction between the object and the plane is 0.5). 1)10N 2)12N 3)15N 4)180N 5)20Narrow_forward
- Find the tension in each of the three cables (in N) supporting the traffic light if it weighs 2.22 ✕ 102 N. w = 222 N T1= N T2= N T3= Narrow_forwardA window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 202 N and is 2.8 m long. What is the tension in each rope when the 706–N worker stands 1.20 m from one end? SMALLER TENSION= _______N LARGER TENSION= ________Narrow_forwardIf the coefficient of static friction between your sneakers and the ground is 0.800, what is the largest angle incline you could stand on without slipping?arrow_forward
- Suppose the tension in both of the cables is measured to be 50 N and that the angle that each cable makes with the horizontal is known to be 30 degrees. What is the weight of the sign? * a. 150 N b. 50 N c. 30 N d. 25 Narrow_forwardThe two blocks (m =16 kg, M =88 kg) in Fig. are not attached to each other. The coefficient of static friction between the blocks is µs =0.38, but the surface beneath the larger block is frictionless. What is the minimum magnitude of the horizontal force required to keep the smaller block from slipping down the larger block?arrow_forwardThe figure below shows a bird feeder that weighs 177.7 N. The feeder is supported by a vertical wire, which is in turn tied to two wires, each of which is attached to a horizontal support. The left wire makes a 60° angle with the support, while the right wire makes a 30° angle. What is the tension in each wire (in N)? left wire= ? N right wire= ?N bottom wire= ?Narrow_forward
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