You are able to hold your arm in an outstretched position because of the deltoid muscle. The force diagram for this is shown below. Assume that the weight of the humerus is 8 lb (with a center of gravity as shown), and that the deltoid muscle makes an angle of α = 18 degrees to the humerus.
What is the magnitude of the tension in the deltoid muscle? What
is the magnitude of the force F at the joint? 
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You are able to hold your arm in an outstretched position
because of the deltoid muscle....
Deltoid muscle Fig. 1a Problem #2.1 You are able to hold your arm in an outstretched...
Deltoid muscle Fig. 1a Problem #2.1 You are able to hold your arm in an outstretched position because of the deltoid muscle. The force diagram for this is shown in Fig. 1b. Use the equilibrium conditions to determine the tension T in the deltoid muscle needed to achieve this equilibrium, and the vertical and horizontal components of the force exerted by the scapula (shoulder blade)on the humerus. Assume the weight of the humerus is 36.0 N and the deltoid muscle...
You are able to hold out your arm in an outstretched horizontal position because of the action of the deltoid muscle. A...
You are able to hold out your arm in an outstretched horizontal position because of the action of the deltoid muscle. Assume the humerus bone has a mass M1=3.6kg, length L=0.66m and its center of mass is a distance L1=0.33m from the scapula. (For this problem ignore the rest of the arm.) The deltoid muscle attaches to the humerus a distance L2=0.15m from the scapula. The deltoid muscle makes an angle of ?=17? with the horizontal, as shown. (Figure 1)...
Part A is correct, but I cant figure out parts B or C You are able...
Part A is correct, but I cant
figure out parts B or C
You are able to hold your arm in an outstretched position because of the deltoid muscle. The force diagram for this is shown below. Assume that the weight of the humerus is 6 lb (with a center of gravity as shown), and that the deltoid muscle makes an angle of a - 15 degrees to the humerus. Deltoid muscle Humerus mg 1) What is the magnitude of...
When you hold your arm outstretched, it's supported primarily by the deltoid muscle.
When you hold your arm outstretched, it's supported primarily by the deltoid muscle. The given figure shows a case in which the deltoid exerts a 67 N force at 15 degrees to the horizontal. If the force-application point is 18 cm horizontally from the shoulder joint, what torque does the deltoid exert about the shoulder?
3. The figure shows an outstretched arm with a mass of 4.2 kg. The arm is...
3. The figure shows an outstretched arm with a mass of 4.2 kg. The arm is 56 cm long, and its center of gravity is 21 cm from the shoulder. The hand at the end of the arm hold a mass of 6.0 kg. (a) What is the torque about the shoulder due to the weights of the arm and the 6.0 kg mass? (b) If the arm is held in position by the deltoid muscle, whose force on the...
The arm in Figure P8.18 weights 41.5N. The force of gravity acting on the arm acts...
The arm in Figure P8.18 weights 41.5N. The force of gravity acting on the arm acts through point A, Determine the magnitude of the tension force Ft in the deltoid muscle and the force Fs of the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown. Apply the two conditions for equilibrium
The arm in the figure below weighs 44.5 N Ta L2 10.80. Determine the magnitude of...
The arm in the figure below weighs 44.5 N Ta L2 10.80. Determine the magnitude of the tension force F, in the deltoid muscle. The force of gravity acting on the arm acts through point A. Assume that L, 0.284m and a 0.0820m,, L2 Submit Answer Tries 0/10 Determine the magnitude of the tension force F of the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown Submit Answer Tries 0/10 Determine the angle of...
The total mass of the arm shown in (Figure 1) is 3.5 kg . The location...
The total mass of the arm shown in (Figure 1) is 3.5 kg . The
location of the center of mass of the arm is shown, FM is the force
exerted by the deltoid muscle on the upper arm, and FJ is the
normal force from the shoulder joint on the upper arm.
Part A
Determine the magnitude of the force required from the deltoid
muscle to hold up the outstretched arm in the position shown.
Part B
Suppose this...
A woman lifts a 3.6-kg barbell in each hand with her arm in a horizontal position...
A woman lifts a 3.6-kg barbell in each hand with her arm in a
horizontal position at the side of her body and holds it there for
3 s (see the figure below).
What force does the deltoid muscle in her shoulder exert on the
humerus bone while holding the barbell? The deltoid attaches 13 cm
from the shoulder joint and makes a 13? angle with the humerus. The
barbell in her hand is 0.55 m from the shoulder joint,...
A person lifts a dumbbell of weight Wd (see below). Their arm weighs Wa. The deltoid...
A person lifts a dumbbell of weight Wd (see below). Their arm weighs Wa. The deltoid muscle is attached to the arm at an angle as shown and supplies a force Fd. The freebody diagram below illustrates the distances where the various forces act on the arm. Write an expression for Fd in terms of Wa, wd, L1, L2, L3 and e. Write and expression for the total reaction force R that the shoulder joint applies to the left end...
Deltoid muscle Fig. 1a Problem #2.1 You are able to hold your arm in an outstretched position because of the deltoid muscle. The force diagram for this is shown in Fig. 1b. Use the equilibrium conditions to determine the tension T in the deltoid muscle needed to achieve this equilibrium, and the vertical and horizontal components of the force exerted by the scapula (shoulder blade)on the humerus. Assume the weight of the humerus is 36.0 N and the deltoid muscle...
Part A is correct, but I cant
figure out parts B or C
You are able to hold your arm in an outstretched position because of the deltoid muscle. The force diagram for this is shown below. Assume that the weight of the humerus is 6 lb (with a center of gravity as shown), and that the deltoid muscle makes an angle of a - 15 degrees to the humerus. Deltoid muscle Humerus mg 1) What is the magnitude of...
3. The figure shows an outstretched arm with a mass of 4.2 kg. The arm is 56 cm long, and its center of gravity is 21 cm from the shoulder. The hand at the end of the arm hold a mass of 6.0 kg. (a) What is the torque about the shoulder due to the weights of the arm and the 6.0 kg mass? (b) If the arm is held in position by the deltoid muscle, whose force on the...
The arm in Figure P8.18 weights 41.5N. The force of gravity acting on the arm acts through point A, Determine the magnitude of the tension force Ft in the deltoid muscle and the force Fs of the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown. Apply the two conditions for equilibrium
The arm in the figure below weighs 44.5 N Ta L2 10.80. Determine the magnitude of the tension force F, in the deltoid muscle. The force of gravity acting on the arm acts through point A. Assume that L, 0.284m and a 0.0820m,, L2 Submit Answer Tries 0/10 Determine the magnitude of the tension force F of the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown Submit Answer Tries 0/10 Determine the angle of...
The total mass of the arm shown in (Figure 1) is 3.5 kg . The
location of the center of mass of the arm is shown, FM is the force
exerted by the deltoid muscle on the upper arm, and FJ is the
normal force from the shoulder joint on the upper arm.
Part A
Determine the magnitude of the force required from the deltoid
muscle to hold up the outstretched arm in the position shown.
Part B
Suppose this...
A woman lifts a 3.6-kg barbell in each hand with her arm in a
horizontal position at the side of her body and holds it there for
3 s (see the figure below).
What force does the deltoid muscle in her shoulder exert on the
humerus bone while holding the barbell? The deltoid attaches 13 cm
from the shoulder joint and makes a 13? angle with the humerus. The
barbell in her hand is 0.55 m from the shoulder joint,...
A person lifts a dumbbell of weight Wd (see below). Their arm weighs Wa. The deltoid muscle is attached to the arm at an angle as shown and supplies a force Fd. The freebody diagram below illustrates the distances where the various forces act on the arm. Write an expression for Fd in terms of Wa, wd, L1, L2, L3 and e. Write and expression for the total reaction force R that the shoulder joint applies to the left end...
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