| BIO Traction apparatus . In order to prevent muscle contraction from misaligning bones during healing (which can cause a permanent limp), injured or broken legs must be supported horizontally and at the same time kept under tension (traction) directed along the leg. One version of a device to accomplish this aim, the Russell traction apparatus, is shown in Figure 5.42 . This system allows the apparatus to support the full weight of the injured leg and at the same time provide the traction along the leg. If the leg to be supported weighs 47.0 N, (a) what must be the weight of Wand (b) what traction force does this system produce along the leg? Figure 5.42 Problem 8.
| BIO Traction apparatus . In order to prevent muscle contraction from misaligning bones during healing (which can cause a permanent limp), injured or broken legs must be supported horizontally and at the same time kept under tension (traction) directed along the leg. One version of a device to accomplish this aim, the Russell traction apparatus, is shown in Figure 5.42 . This system allows the apparatus to support the full weight of the injured leg and at the same time provide the traction along the leg. If the leg to be supported weighs 47.0 N, (a) what must be the weight of Wand (b) what traction force does this system produce along the leg? Figure 5.42 Problem 8.
| BIO Traction apparatus. In order to prevent muscle contraction from misaligning bones during healing (which can cause a permanent limp), injured or broken legs must be supported horizontally and at the same time kept under tension (traction) directed along the leg. One version of a device to accomplish this aim, the Russell traction apparatus, is shown in Figure 5.42. This system allows the apparatus to support the full weight of the injured leg and at the same time provide the traction along the leg. If the leg to be supported weighs 47.0 N, (a) what must be the weight of Wand (b) what traction force does this system produce along the leg?
PA
BY
200 lb
-y
2 ft
2 ft
3 ft
The slab shown is supported by vertical cables at points A, B, and C. The slab is
subjected to a single 200 lb force. The weight of the slab is negligible.
Which of the following is closest to the magnitude of the tension in cable B?
The upper leg muscle (quadriceps) exerts a force of 1220 N , which is carried by a tendon over the kneecap (The patella) at the angle shown in figure 5.43. Find the magnitude and direction of the force exerted by the knee cap on the upper leg bone ( the femur ) . n? degree (counter clockwise from an axis directed to the left ) ?
A box of bananas weighing 40.0 NN rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.40 and the coefficient of kinetic friction is 0.20.
If no horizontal force is applied to the box and the box is at rest, how large is the friction force exerted on the box?
My question, what is the equation to solve for the force of friction? what affect do the kinetic and static friction have on this?
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