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In the side view of a 50-lb flat-screen television resting on an 80-lb cabinet, the respective centers of gravity are labeled
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Engineering Mechanics: Statics
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- The center of gravity of the 3000-lb car is at G. The car is parked on an incline with the parking brake engaged, which locks the rear wheels. Find (a) the normal forces (perpendicular to the incline) acting under the front and rear pairs of wheels; and (b) the friction force (parallel to the incline) under the rear pair of wheels.arrow_forwardThe homogeneous bar AB weighs 25 lb. Determine the magnitudes of the forces acting on the bar at A and B. Neglect friction.arrow_forwardFind the internal force systems acting on sections 1 and 2.arrow_forward
- X Incorrect In the side view of a 48-lb fl at-screen television resting on an 95-lb cabinet, the respective centers of gravity are labeled G2 and G1. Assume symmetry into the screen and calculate the normal reaction force at each of the four casters. Note that there are two casters that each have the force Na and two casters that each have the force Ng. G2 G. 16" 13"+ 3" Answers: MacBook Airarrow_forwardThe figure shows the Russel fracture traction device and a mechanical model of the leg. The leg is held in balance in the position indicated by the two weights attached to the two cables. The total weight of the leg and the cast is W=250 N. The distance between the points A and B where the cables are attached to the leg is given as L=100 cm and the angle of the leg with the horizontal is γ=6°. Point C is the center of gravity of the cast and leg at three quarters of the L measured from point A (3L/4= 75 cm). The angle that cable 2 makes with the horizontal is measured as β=40°. Accordingly, in order for the leg to remain in balance in the shown position; a) Find the tensile force T1 in cable 1. (Write your result in N) Answerb) Find the tensile force T2 in cable 2. (Write your result in N) Answerc) Find the angle α of cable 1 with the horizontal. Responsearrow_forwardThe figure shows a mechanical model of the Russel fracture traction device and the leg. The leg is held in balance in the position indicated by the two weights attached to the two cables. The total weight of the leg and the cast is W=200 N. The horizontal distance between points A and B where the cables are attached to the leg is L=100 cm and the vertical distance is d=10 cm . Point C is the center of gravity of the cast and leg at three quarters of the L measured from point A ( 3L/4= 75 cm) . The angle that cable 2 makes with the horizontal is measured as β=40 ° . Accordingly, in order for the leg to remain in balance in the position shown; a) Find the tensile force T 1 in cable 1 . (Write your result in N ) b) Find the tensile force T 2 in cable 2 . (Write your result in N ) c) Find the angle α of cable 1 with the horizontalarrow_forward
- The resultant force of the three cable tensions that support the crate is R = 500j lb. Find T1 and T3, given that T2 = 300 lb. "Full procedure (step by step), please."arrow_forwardA crane boom is supported as shown. The boom has a mass of 660 kg and the box on the end of the cable has a mass of 98 x 10 kg. Assume that the center of mass for the boom is half way along its 15 meter length. Calculate the tension in the upper (diagonal) cable required to support the crane in equilibrium. The cable angle with the ground is 45 degrees and the boom angle with the ground is 60 degrees.arrow_forwardThe figure shows the Russel fracture traction device and a mechanical model of the leg. The leg is held in balance in the position indicated by the two weights attached to the two cables. The combined weight of the leg and cast is W=180 N. The distance between the points A and B where the cables are attached to the leg is given as L=100 cm and the angle of the leg with the horizontal is given as γ=8°. Point C is the center of gravity of the cast and leg at three quarters of the L measured from point A (3L/4= 75 cm). The angle that cable 2 makes with the horizontal is measured as β=50°. Accordingly, in order for the leg to remain in balance in the shown position; a) Find the tensile force T1 in cable 1. (Write your result in N)b) Find the tensile force T2 in cable 2. (Write your result in N)c) Find the angle α of cable 1 with the horizontal.arrow_forward
- The wheels, axle, and handles of a wheelbarrow weigh W = 55 N. The load chamber and its contents weigh WL = 623 N. The drawing shows these two forces in two different wheelbarrow designs. To support the wheelbarrow in equilibrium, the man’s hands apply a force to the handles that is directed vertically upward. Consider a rotational axis at the point where the tire contacts the ground, directed perpendicular to the plane of the paper. Find the magnitude of the man’s force for both designs.arrow_forwardThe telescoping arm ABC is used to provide an elevated platform for construction workers. The workers and the platform together have a mass of 212 kg and have a combined center of gravity located directly above C. Assume 0 = 20°. 5 m 2.4 m B 0.9 m 0.5 m Draw the free-body diagram of the arm ABC.arrow_forwardA non-uniform bar rests across two supports that are 20 ft apart. When loads of 200 lb, 4 ft from end A and 150 lb, 6 ft from end B, are on the bar, end A supports 233 lb and end B supports 197 lb. Find the weight of the bar and the position of the center of gravity.arrow_forward
- International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE L