Problem 4 The upper leg muscle (quadriceps) exerts a force of 1250 N, which is carried by a tendon over the kneecap (the patella) at the angles shown in the figure. Find the direction and magnitude of the force exerted by the kneecap on the femur. F, = 1250 N 55° 75° Fo

Problem 4 The upper leg muscle (quadriceps) exerts a force of 1250 N, which is carried by a tendon over the kneecap (the patella) at the angles shown in the figure. Find the direction and magnitude of the force exerted by the kneecap on the femur. F, = 1250 N 55° 75° Fo

Name: Please show all work so I can learn Problem 4 The upper leg muscle (qu
Uploaded: 2024-03-20T06:56:46.000Z
Channel: Bartleby
Description: Please show all work so I can learn Problem 4 The upper leg muscle (quadriceps) exerts a force of 1250 N, which is carried by a tendonover the kneecap (the patella) at the angles shown in the figure. Find the direction and magnitude of theforce exert

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter4: Dynamics: Force And Newton's Laws Of Motion

Section: Chapter Questions

Problem 41PE: Two muscles in the back of the leg pull upward on the Achilles tendon, as shown in Figure 4.40...

See similar textbooks

Similar questions

The leg and cast in Figure P4.40 weigh 220 N (w1). Determine the weight w2 and the angle needed so that no force is exerted on the hip joint by the leg plus the cast. Figure P4.40
If you wish to reduce the stress (which related to centripetal force) on high-speed tires, would you use large- or small diameter tires? Explain.
Find the terminal velocity of a spherical bacterium (diameter 2.00 pm) falling in water. You will first need to note that the drag force is equal to the weight at terminal velocity. Take the density of the bacterium to be 1.10103 kg/m3.
Two muscles in the back of the leg pull upward on the Achilles tendon, as shown in Figure 4.40 (These muscles are called the medial and lateral heads of the gastrocnemius muscle.) Find the magnitude and direction of the total force on the Achilles tendon. What type of movement could be caused by this force?
In Problem 10, the mass of the sign is 25.4 kg, and the mass of the potted plant is 66.7 kg. a. Assuming the objects are in equilibrium, determine the magnitude of the static friction force experienced by the potted plant. b. What is the maximum value of the static friction force if the coefficient of static friction between the pot and the roof is 0.572?
A truck loaded with sand accelerates along a highway. The driving force on the truck remains constant. What happens to the acceleration of the truck if its trailer leaks sand at a constant rate through a hole in its bottom? (a) It decreases at a steady rate. (b) It increases at a steady rate. (c) It increases and then decreases. (d) It decreases and then increases. (e) It remains constant.
Two identical strings making an angle of = 30.0 with respect to the vertical support a block of mass m = 15.0 kg (Fig. P4.32). What is the tension in each of the strings?
The board sandwiched between two other boards in Figure P5.97 weighs 95.5 N. If the coefficient of static friction between the boards is 0.663, what must be the magnitude of the compression forces (assumed horizontal) acting on both sides of the center board to keep it from slipping?
2) A student’s head is bent over her physics book. The head weighs P = 24.6 N and is supported by the muscle force F→mF→m exerted by the neck extensor muscles and by the contact force F→cF→c exerted at the atlantooccipital joint. Given that the magnitude of F→mF→m is 60.0 N and is directed 35.0° below the horizontal. a.) Find the magnitude of the contact force F→cF→c . b.)Find the direction of the contact force Fc−→Fc→ . If the direction is below the horizontal, enter a negative value.
4) A block of weight w is suspended from a rope tied to two other ropes at point O. One rope is horizontally attached to a wall and the other is fastened to the ceiling. The angle between ceiling and the rope is 60°. What are the tensions in each of the ropes? Assume the weights of the ropes and the knot are negligible. If the weight of the block is 100 N, what is the tension in the ceiling rope?
1 (a) Find the normal force exerted on a 2.9-kg book restingon a surface inclined at 36° above the horizontal. (b) If the angleof the incline is reduced, do you expect the normal force to increase, decrease, or stay the same? Graph and Explain.
A persons head is bent over a book. The head weighs P=37.2 N and is supported by the muscle force Fm exerted by the neck extensor muscles and by the contact force Fc excerted at the atlantooccipital joint. Given that the magnitude of Fm is 60.0 N and is directed 35.0 degree below the horizontal. Find the direction of the contact force Fc. If the direction is below the horizontal, enter a negative value.