DA man holds a 178-N ball in his hand, with the arm bone- 22. Upper - rlexor muscle forcarm horizontal (sce the draw- ing). He can support the ball in this position because of the flexor muscle force M, which is applied perpendicular to the forearm. The forearm weighs 22.0 N and has a center of gravity as indicated. Find (a) the magnitude of M and (b) the magnitude and direction of the force applied by the upper arm bone to the forearm at the elbow joint. Elbow cg joint '0.0890 m -0.330 m- 0.0510 m

DA man holds a 178-N ball in his hand, with the arm bone- 22. Upper - rlexor muscle forcarm horizontal (sce the draw- ing). He can support the ball in this position because of the flexor muscle force M, which is applied perpendicular to the forearm. The forearm weighs 22.0 N and has a center of gravity as indicated. Find (a) the magnitude of M and (b) the magnitude and direction of the force applied by the upper arm bone to the forearm at the elbow joint. Elbow cg joint '0.0890 m -0.330 m- 0.0510 m

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 61P: Show that, as explained in the text, a force F exerted on a flexible medium at its center and...

See similar textbooks

Similar questions

Show that, as explained in the text, a force F exerted on a flexible medium at its center and perpendicular to its length (such as on the tightrope wire in Figure 5.26) gives rise to a tension of magnitude T=F/2sin() .
When tightening a bolt, you push perpendicularly on a wrench with a force of 165N at a distance of 0.140m from the center of the bolt. How much torque are you exerting relative to the center of the bolt?
A woman weighing 580 N does a pushup from her knees, as shown. What are the normal forces of the floor on (a) each of her hands and (b) each of her knees?
Finding the weight of the P body balanced by the 60N force F.
• Pulling the string on a bow back with a force of 28.7 lb, an archerprepares to shoot an arrow. If the archer pulls in the center of thestring, and the angle between the two halves is 138°, what is thetension in the string?
How much compression acts on the hip during two-legged standing, given that the joint supports 250 N of body weight and the abduct muscles are producing 600 N of tension? What is the angle α of R?
Find the N2 in Newton's exerted on the beam by the support on the right end
During most of the stance phase of the gait, the knee flexion is less than 20º. What force must the quadriceps muscle apply to maintain this flexion while standing on one leg? The patient's weight is 836N, assuming that the distance from the center of the joint to the line of gravity is 5 cm and the distance perpendicular to the center of the joint towards which the muscle acts is 5 cm, and the muscle acts ( pull) at 60º to the horizontal.
. A tightly stretched horizontal “high wire” is 36 m long. Itsags vertically 2.1 m when a 60.0-kg tightrope walker standsat its center. What is the tension in the wire? Is it possibleto increase the tension in the wire so that there is no sag?
Find the tension in the two cords shown in the figure. Neglect the mass of the cords and assume that the angle θ is 33° and the mass m is 190-Kg.
A 50N body is supported by two ropes, one making 30* with the vertical and the other making 45* with the horizontal. What is the tension in the ropes?
If the coefficient of static friction between a car’s tires andthe pavement is 0.65, calculate the minimum torque thatmust be applied to the 66-cm-diameter tire of a 1080-kgautomobile in order to “lay rubber” (make the wheels spin,slipping as the car accelerates). Assume each wheel supportsan equal share of the weight.