A car is stuck in the mud. A tow truck pulls on the car with the arrangement shown in the figure below. The tow cable is under a tension of of 2,060 N and pulls downward and to the left on the pin at its upper end. The light pin is held in equilibrium by forces exerted by the two bars A and B. Each bar is a strut; that is, each is a bar whose weight is small compared to the forces it exerts and which exerts forces only through hinge pins at its ends. Each strut exerts a force directed parallel to its length. Determine the force of tension or compression in each strut. Proceed as follows. Make a guess as to which way (pushing or pulling) each force acts on the top pin. Draw a free-body diagram of the pin. Use the condition for equilibrium of the pin to translate the free-body diagram into equations. From the equations calculate the forces exerted by struts A and B. If you obtain a positive answer, you correctly guessed the direction of the force. reversed, but the absolute value correctly gives the magnitude of the force. If a strut pulls on a pin, it is in tension. If it pushes, the strut is in compression. Identify whether each strut is in tension or in compression. (Assume 0, = 55° and 0, = 54°.) negative answer means the direction should be force exerted by strut A compression v force exerted by strut B tension B

A 3.0 m long rigid beam with a mass 120 kg is supported at each end. An 70 kg student stands 2.0 m from support 1. How much upward force does support 1 exert on the beam? (Figure 1) How much upward force does support 2 exert on the beam?

The large quadriceps muscle in the upper leg terminates at its lower end in a tendon attached to the upper end of the tibia (see Figure a). The forces on the lower leg when the leg is extended are modeled as in Figure b, where T is the force of tension in the tendon, w is the force of gravity acting on the lower leg, and F is the force of gravity acting on the foot. Find T when the tendon is at an angle of 25.0° with the tibia, assuming that w = 29.O N, F = 12.3 N, and the leg is extended at an angle 6 of 40.0° with the vertical. Assume that the center of gravity of the lower leg is at its center and that the tendon attaches to the lower leg at a point one-fifth of the way down the leg. (Give the magnitude.) Quadriceps - Tendon Tibia 25.0°7

In the figure, suppose the length L of the uniform bar is 2.9 m and its weight is 170 N. Also, let the block's weight W = 270 N and the angle 0 = 37°. The wire can withstand a maximum tension of 360 N. (a) What is the maximum possible distance x before the wire breaks? With the block placed at this maximum x, what are the (b) horizontal and (c) vertical components of the force on the bar from the hinge at A? com A (a) Number i Units (b) Number i Units (c) Number i Units >

A uniform beam of length 1.0 m and mass 20 kg is attached to a wall by a cable as shown in (Figure 1). The beam is free to pivot at the point where it attaches to the wall. What is the tension in the cable?

Problem #2: A 50.0-kg sign hangs from the end of a uniform strut. The strut is 4.0 m long and weighs 400.0 N. The strut is supported by a hinge at the wall and by a cable whose other end is tied to the wall at a point 3.0 m above the left end of the strut. Find a. the tension in the supporting cable b. the force of the hinge on the strut (magnitude and direction). 5.0 m 3.0 m 4.0 m GAS

In the figure, suppose the length L of the uniform bar is 2.7 m and its weight is 180 N. Also, let the block's weight W = 340 N and the angle θ = 29˚. The wire can withstand a maximum tension of 400 N. (a) What is the maximum possible distance x before the wire breaks? With the block placed at this maximum x, what are the (b) horizontal and (c) verticalcomponents of the force on the bar from the hinge at A?

A 1,300 N shaft is held in place by a light wire at an angle 0 = 29.0° to the horizontal as shown in the figure. The shaft is attached to a pivot at the bottom, and a mass of weight w = 2,075 N hangs from its top. The shaft makes an angle of Q = 61.0° with the horizontal. Assume the shaft is uniform. A 31 m (a) Find the tension in the supporting wire (in kN). KN (b) Find the components of the reaction force (in kN) exerted by the floor on the shaft. horizontal component: magnitude direction KN right vertical component: magnitude direction upward KN ¾ >

A car is stuck in the mud. A tow truck pulls on the car with the arrangement shown. The tow cable is under a tension of 2 500 N and pulls downward and to the left on the pin at its upper end. The light pin is held in equilibrium by forces exerted by the two bars A and B. Each bar is a strut; that is, each is a bar whose weight is small compared to the forces it exerts and which exerts forces only through hinge pins at its ends. Each strut exerts a force directed parallel to its length. Determine the force of tensionor compression in each strut. Proceed as follows. Make a guess as to which way (pushing or pulling) each force acts on the top pin. Draw a free-body diagram of the pin. Use the condition for equilibrium of the pin to translate the free-body diagram into equations. From the equations calculate the forces exerted by struts A and B. If you obtain a positive answer, you correctly guessed the direction of the force. A negative answer means that the direction should be reversed,…

You have a summer job working downtown washing windows on skyscrapers (the pay is great and so are the medical benefits).  The platform you and your partner are using to get to the windows is a meter wide and four meters long.  You know from hauling the platform out of your truck countless times that it has a mass of 70 kg.  It is supported by two cables, one at each end, mounted on-center to prevent the platform from tipping over as it is pulled up the side of the building at a constant speed.  If you (mass of 55 kg) are standing on the platform 1 meter from one cable while your partner (mass of 87 kg) is 1.3 meters from the other cable and both of you are half a meter from the side, what is the tension in each cable?  Assume the platform has a uniform mass distribution and is of negligible thickness.