Suppose you are standing on the floor doing your daily exercises. For one exercise, you lift your arms up and out until they are horizontal. In this position, assume that the deltoid muscle exerts a force of 210 N at an angle of 15.0° above the horizontal on the humerus, as shown in the figure. 15.0° Deltoid muscle Humerus

Suppose you are standing on the floor doing your daily exercises. For one exercise, you lift your arms up and out until they are horizontal. In this position, assume that the deltoid muscle exerts a force of 210 N at an angle of 15.0° above the horizontal on the humerus, as shown in the figure. 15.0° Deltoid muscle Humerus

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 20P: The leg and cast in Figure P4.40 weigh 220 N (w1). Determine the weight w2 and the angle needed so...

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
A cook holds a 1.80-kg carton of milk at arm's length. What force FB must be exerted by the biceps muscle? An arm is extending horizontally to the left with a cutout that shows muscles in the upper arm. A carton of milk is in the hand, and an arrow labeled vector Fg points directly downward. A point on the person's forearm lies a horizontal distance of 25.0 cm to the right of the milk and a horizontal distance of 8.00 cm to the left of the elbow. An arrow labeled vector FB points from this point up and to the right at an angle of 75.0° from the vertical.
The figure shows a claw hammer as it pulls a nail out of a horizontal board. Single point of contact 5.04 cm 28◦ F 31 cm If a force of magnitude 189 N is exerted horizontally as shown, find the force exerted by the hammer claws on the nail. (Assume that the force the hammer exerts on the nail is parallel to the nail). Answer in units of N. please help
A uniform plank of length 2.00 m and mass 29.5 kg is supported by three ropes, as indicated by the blue vectors in the figure below. Find the tension in each rope when a 685–N person is d = 0.500 m from the left end. magnitude of T1 = magnitude of T2 = magnitude of T3 =
Two tension ropes are connected to a wall and subject to forces as shown by the diagram below. Determine if the system is in equilibrium. If not, find the direction of the unbalanced force. a. The system is in equilibrium Not in equilibrium, direction = 36.87° clockwise from the horizontal b. Not in equilibrium, direction = 36.87º counter clockwise from the horizontal c. Not in equilibrium, direction = 53.13º clockwise from the horizontal d. Not in equilibrium, direction = 53.13º counterclockwise from the horizontal
The figure below shows a bird feeder that weighs 177.7 N. The feeder is supported by a vertical wire, which is in turn tied to two wires, each of which is attached to a horizontal support. The left wire makes a 60° angle with the support, while the right wire makes a 30° angle. What is the tension in each wire (in N)? left wire= ? N right wire= ?N bottom wire= ?N
Two muscles on the back of the leg pull upwards on the Achilles tendon. Each force makes an angle of θ=20∘θ=20∘ with the vertical, with one pulling up and to the right and the other pulling up and to the left. Each force has a magnitude F=F=573 N.Write an expression for the magnitude of the sum, FsumFsum, of these two forces. What is the magnitude, in newtons, of the sum of these two forces?
A 175 N sign is supported by two ropes. One rope pulls up and to the right θ1=29.5∘ above the horizontal with a tension T1, and the other rope pulls up and to the left θ2=49.5∘ above the horizontal with a tension T2, as shown in the figure. Find the tensions T1 and T2.
7.) An inclined plane with one sloping side that changes the direction of the input force is called a wedge. a. True b. False
A person who mass is m=72.0kg steps onto a mechanical bathroom scale on an incline at an angle of 28.1deg with the horizontal. What is the reading on the scale?
The upper leg muscle (quadriceps) exerts a force of 1270 N, which is carried by a tendon over the kneecap (the patella) at the angles shown in Figure 5.43. Find the magnitude and direction of the force exerted by the kneecap on the upper leg bone (the femur).Answer in N Answer in ° (counter-clockwise from an axis directed to the left)
Four forces act on a particle that is in equilibrium where F3 and P are in the xz-plane. The magnitude of one force is know to be P=600 N A) Write the equilibrium equation for the forces in the x- direction. Express your answer in terms of F1,F2,F3, and P. Express know forces in N and angles in degrees B) Write the equilibrium equation for the foces in the y-direction. Express your answer in terms of F1,F2,F3, and P. Express know forces in N and angles in degrees C) Write the equation for forces in the z-direction. Express your answer in terms of F1,F2,F3, and P. Express know forces in N and angles in degrees