7. Three masses are hanging vertically as shown in thedrawing on the right. Assume the pulleys arefrictionless and the system is in static equilibriumwith m2, m3 and 2 values given in the table below,what are the values of mi and O?oinvole ns02m.mm2m375.0g150.0g30.0°hivom olidw qaan diw nweb gnivom olidw oh

Answered: Image /qna-images/answer/94782aee-e72c-4f5e-ae28-53e30e24e7ea.jpg

Answered: 7. Three masses are hanging vertically…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter9: Statics And Torque

Section: Chapter Questions

Problem 1PE: (a) When opening a door, you push on it perpendicularly with a force of 55.0 N at a distance of...

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(a) When opening a door, you push on it perpendicularly with a force of 55.0 N at a distance of 0.850m from the hinges. What torque are you exerting relative to the hinges? (b) Does it matter if you push at the same height as the hinges?
There are four forces acting on a pole, A = 10i N, B = 20j N, C = -30j N, D = -40i N. What should be the magnitude of force E that must be exerted on the pole to maintain static equilibrium? Note: i and j are unit vectors a. 24.65 N b. 31.62 N c. 46.20 N d. 52.78 N e. No Answer
24. A uniform, horizontal plank, having a weight of 254 N, is held in static equilibrium by a frictionless pin at A and a cord tied at the plank's left end. The length of segment PA is 20.0 cm, and the length of AC is 70.0 cm. What is the tension in the cord? 58.0 mg gravity a. 1050 N b. 444 N c. 524 N d. 318 N e. 374 N 2013 Regional
3. A cable goes over a frictionless pulley at B and supports a block of mass m. The other end of the cable is pulled by a horizontal force P. If the cable has a mass per length of 0.3 kg/m, determine values of P and m that will maintain the cable in the position shown. 5 m P (horizontal) A В. m -10 m Ans.m=4.725 kg; p=3.225 kg
2. A brake consists of members AB, CB and pulley D as shown in figure. A string supporting a weight P-1800N passes through over pulley D. the other end of the string is secured to the wall. r=0. Im. AD=0.2m, BD=0.4m, .Determine the reaction forces at points A and the internal force of rod BC. The weight of the members and pulley are negligible- D B
3. The pulley shown in the figure is free to ride on the supporting guide wire. If the pulley supports a 160lb weight, what is the tension in the wire? Assume the system is in equilibrium. 20⁰ 20⁰ 160lb 4. Two cables support 800N weight as shown in the figure. Determine the tension AB & BC? Assume the system is in equilibrium. 40⁰ 90° B 800N
A 80-kg block is suspended as shown. The beam is weightless and is hinged to the wall at A. The tension force of the cable T has magnitude: (Use g = 9.8 m/s2) %3D T. 3m A 4m block O a 980 N Ob. 817 N Oc. 1143 N Od. 620N O e. 1307 N
The (180 N) force is applied to the end of the body OAB. If 0-50 determined the equivalent force couple system of the shaft axis O. B 120 mm 8 F = 180 N I L OF=-169.1 i-61.6j N, M=41.9 N.m CCW OF=169.1 i+61.6j N, M=41.9 N.m CW OF=201.1 i-61.6k N, M-41.9 N.m CCW 30° A 150 mm
The uniform bar with end rollers weighs 85 lb and is supported by the horizontal and vertical surfaces and by the wire AC. Calculate the tension Tin the wire and the reactions against the rollers at A and at B. 1.9' B 3.5' A 4.1' Answers: T= i 82.3 Ib A = i 19.5 Ib В - i 49.8 Ib Save for Later Last saved 4 days ago. Attempts: 0 of 1 used Submit Answer Saved work will be auto-submitted on the due date. Auto- submission can take up to 10 minutes.
Three forces F, = 20 N, F, = 10 N and F, = 5.0 N act on the structure shown in fi fourth force F4 to be applied at a point P on the structure to keep it in equilibrium. force has two components Fv and Fh. Given that a = 2.0 m, b = 3.0 m and c = 1. Fh, Fv and d %3D %3D O a. Fh = 5N, Fv 30N=,d = 1.33m O b. Fh = 3ON, Fv 5N=,d = 1.33m Oc Fh = 1ON, Fv 15N=, d = 3m O d. Fh = 15N, Fv 10N=.d= 3m
A 16-lb force is being applied to end D of arm BCD. The arm is connected by pins to crank AB at point B, and to a frictionless collar at point C. Determine the couple M required to hold the system in equilibrium when 0 = 90°. Include both the magnitude and direction of couple M as part of your answer. 10 in.→ 12 in.→ В 7.5 in. 8 in. M. 6 in. 16 lb The solution to this problem requires a free-body diagram for each member of the machine, and a sketch of the coordinate system used. Use the components of the forces with EF, = 0 and EF, = 0 to apply EF = 0 for a member. %3D y
A string, having a diameter of 1 mm and density of 16.0 x 103 kg/m³, is fixed at one end. Its other end hangs over a pulley and has a block of mass 2.00 kg attached to it, as shown in Figure 2. L O OA. 23.5 N OB. 13.3 N OC. 19.6 N O D. 16.2 N m Figure 2 The horizontal part has a length L = 1.60 m and a mass m = 20.0 g. Calculate the tension in the string. B

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