A uniform 1200 N beam that is 3.50 m long is suspended horizontally by two vertical wires at its ends. A small but dense 550 N weight is placed on the beam 2.00 m from one end, as shown in the figure. The tensions, A and B, in the two wires are: OA 8190 N, B = 8960 N = OA 836 N, B = 914 N OA 875 N, B = 875 N = OA 914 N, B = 836 N OA=8960 N, B = 8190 N B 2.00 m 3.50 m
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- The guy wires AB and AC are attached to the top of the transmission tower. The tension in cable AB is 8.6 kN. Determine the required tension Tin cable AC such that the net effect of the two cables is a downward force at point A. Determine the magnitude R of this downward force. Assume a = 45m, b = 56 m, c= 26 m, and d=32 m Answers: i Ri KN kNTwo identical, uniform beams weighing 260 NN each are connected at one end by a frictionless hinge. A light horizontal crossbar attached at the midpoints of the beams maintains an angle of 53.0∘∘ between the beams. The beams are suspended from the ceiling by vertical wires such that they form a "V" What force does the crossbar exert on each beam? Express your answer in newtons. What is the magnitude of the force that the hinge at point AA exerts on each beam? Express your answer in newtons. What is the direction of the force that the hinge at point AA exerts on the right-hand beam? Express your answer in degrees. What is the direction of the force that the hinge at point AA exerts on the left-hand beam? Express your answers in degreesThe figure below shows a horizontal rod, of length 2.8 m, with forces acting on it. A 30 N force acts at its left end, point O, in a direction down and to the left, 45° below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30° to the right of vertical. A 20 N force acts at the right end, in a direction down and to the right, 20° below horizontal. a) What is the net torque (in N · m) on the rod about an axis through O perpendicular to the page? magnitude = ______ N · m direction = (clockwise or counter clockwise) (b) What is the net torque (in N · m) on the rod about an axis through C perpendicular to the page? magnitude = _____ N · m direction = (clockwise or counter clockwise)
- The figure below shows a horizontal rod, of length 2.6 m, with forces acting on it. A 30 N force acts at its left end, point 0, in a direction down and to the left, 45° below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30° to the right of vertical. A 20 N force acts at the right end, in a direction down and to the right, 20° below horizontal. (25 N 30 45° 20° 1.3 m 10 N 2.6 m 30 N (a) What is the net torque (in N m) on the rod about an axis through O perpendicular to the page? magnitude direction counterclockwise (b) What is the net torque (in N m) on the rod about an axis through C perpendicular to the page? magnitude direction counterclockwise vThe guy wires AB and AC are attached to the top of the transmission tower. The tension in cable AB is 9.1 kN. Determine the required tension Tin cable AC such that the net effect of the two cables is a downward force at point A. Determine the magnitude R of this downward force. Assume a = 38 m, b = 49 m, c = 21 m, and d = 32 m. İyi Answers: T= i R= i KN KNThe guy wires AB and AC are attached to the top of the transmission tower. The tension in cable AB is 9.1 kN. Determine the required tension Tin cable AC such that the net effect of the two cables is a downward force at point A. Determine the magnitude R of this downward force. Assume a = 30 m, b = 40 m, c = 28 m, and d = 36 m. d B Answers: T= i 8 R= a b KN KN
- The uniform beam has a mass of 46 kg per meter of length. Determine the reactions at the supports. Answers: Ay A Bx = By = 659 i 1500 2.5 m N N ! N 1.1 m 220 kg BA uniform 1200-N piece of medical apparatus that is 3.5 m long is suspended horizontally by two vertical wires at its ends. A small but dense 550-N weight is placed on the apparatus 2.0 m from one end, as shown in the figure. What are the tensions, A and B, in the two wires? A B 2.0 m 3.5m O A = 910 N, B = 840 N O A= 840 N, B=910N OA= 8200 N, B=9000N O A= 9000 N, B-8200 N /A hungry bear weighing 705 N walks out on a beam in an attempt to retrieve a basket of goodies hanging at the end of the beam (see the figure below). The beam is uniform, weighs 200 N, and is 5.50 m long, and it is supported by a wire at an angle of θ = 60.0°. The basket weighs 80.0 N.
- The figure below shows a horizontal rod, of length 6.4 m, with forces acting on it. A 30 N force acts at its left end, point O, in a direction down and to the left, 45° below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30° to the right of vertical. A 20 N force acts at the right end, in a direction down and to the right, 20° below horizontal.The figure below shows a horizontal rod, of length 7.4 m, with forces acting on it. A 30 N force acts at its left end, point O, in a direction down and to the left, 45° below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30° to the right of vertical. A 20 N force acts at the right end, in a direction down and to the right, 20° below horizontal. *a) What is the net torque (in N · m) on the rod about an axis through O perpendicular to the page? magnitude= ____N · m direction= clockwise or counter clockwise (b)What is the net torque (in N · m) on the rod about an axis through C perpendicular to the page? magnitude= ___ N · m direction= clockwise or counter clockwiseThe 6.8-kg frame AC and 2.8-kg uniform slender bar AB of length lslide with negligible friction along the fixed horizontal rod under the action of the 75-N force. Calculate the tension Tin wire BC and the magnitude FA of the force exerted on the bar by the pin at A. The x-y plane is vertical. 75 N 52° 52 B Answers: T = ! N FA = ! N lle