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Muscle force Axis w The mass and length of the forearm in the diagram below are...
Biceps muscle The bones of the forearm (radius and ulna) are hinged to the humerus at...
Biceps muscle The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of the forearm about 2.15 cm beyond the joint. Assume the forearm has a mass of 2.45 kg and a length of 0.465 m. When the humerus and the biceps are nearly vertical and the forearm is horizontal, if a person wishes to hold an object of mass 5.75 kg so that her forearm remains...
An athlete is measuring the force by their flexor muscle by pulling a rope horizontally at...
An athlete is measuring the force by their flexor muscle by pulling a rope horizontally at a constant force. While pulling the rope the muscle applies a force on the forearm an angle of 71° as shown in the diagram. While keeping your forearm completely vertical, the tension in the rope is at 185N. The athlete's muscle is attached to the forearm 5 cm from the elbow joint and that the weight of your forearm is 22 N with a...
What is the torque that the static load generates about the elbow joint if the forearm...
What is the torque that the static load generates about the elbow joint if the forearm is 30 degrees below the Hur arm is in the vertical position? The mass of the static load is 4 kg. The length of the forearm is 0.5 m. Biceps force Static load What is the torque that the static load generates about the elbow joint if the forearm is 30 degrees below the horizontal line and the upper arm is in the vertical...
Consider the case of the bicepts muscle acting on a forearm holding a 35 N weight....
Consider the case of the bicepts muscle acting on a forearm holding a 35 N weight. The forearm is 30 below the horizontal and the bicepts muscle inserts at an angle of 45 with the forearm. The muscle insertion is at 5 cm from the elbow joint. The forearm has a weight of 18 N and has its center of gravity 15 cm from the elbow. The 35 N weight is held in the hand 30 cm from the joint...
How much force (in N) must the biceps muscle exert when a 25.0 kg mass is...
How much force (in N) must the biceps muscle exert when a 25.0 kg mass is held in the hand in a stationary position when the arm is 17.4° below the horizontal? Assume the mass of the forearm is 2.46 kg. Distances relative to the elbow joint are reb = 5.12 cm; recg = 16.5 cm; ren = 37.5 cm where the distances are: eb = elbow—biceps; ecg = elbow—forearm center of gravity; eh = elbow-hand. A marble column 0.890...
3) Bicep Curls Your elbow is the pivot point for your forearm. Your bicep attaches to...
3) Bicep Curls Your elbow is the pivot point for your forearm. Your bicep attaches to your forearm at 0.05m. Your forearm is nominally 0.35m to the center of your hand, where you hold a weight the Earth on your forearm is 12N. a) Draw a free body diagram and an EFBD for when your forearm is parallel to the ground. b) The system is in static equilibrium. Sum the torques and the forces. Make sure you identify them all....
Assume that a 1.30-kg ball is thrown solely by the action of the forearm, which rotates...
Assume that a 1.30-kg ball is thrown solely by the action of the
forearm, which rotates about the elbow joint under the action of
the triceps muscle, the figure. The ball is accelerated uniformly
from rest to 8.3 m/s in 0.30 s , at which point it is released.
Assume that the forearm has a mass of 3.7 kg and rotates like a
uniform rod about an axis at its end.
A) Calculate the angular acceleration of the arm.
B)Calculate...
1.80-kg carton of milk at arm's length (see the figure below). What force Fg must be...
1.80-kg carton of milk at arm's length (see the figure below). What force Fg must be exerted by the biceps muscle? (Ignore the weight of the forearm. State the magnitude of the force A cook holds N Milk 75.0 -25.0 cm- 8.00 cm
biceps 2) Suppose that the dumbbell has a mass of 10.0 kg (so its weight equals...
biceps 2) Suppose that the dumbbell has a mass of 10.0 kg (so its weight equals 98.0 N) and the arm that holds it has a mass of 2.2 kg (with a weight of 21.6 N). The weight acts 3.0 cm from the elbow joint and we can think of all of the mass of the arm as at a distance of 14.0 cm from the elbow. Find the force in the biceps muscle if it attaches 3.1 cm from...
The diagram above shows a side view of a person’s arm. The forearm and hand together...
The diagram above shows a side view of a person’s arm. The
forearm and hand together weigh 19N (WFH = 19N). The
center of gravity at point T is located 24cm from
the elbow joint. The person is holding a bowling ball 38cm from the
elbow and the ball weighs 47N (WB = 47N).
(a) Calculate the torque produced by the weight of the forearm
and hand about the elbow joint. Include the direction of the
torque.
(b) Calculate the...
Biceps muscle The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of the forearm about 2.15 cm beyond the joint. Assume the forearm has a mass of 2.45 kg and a length of 0.465 m. When the humerus and the biceps are nearly vertical and the forearm is horizontal, if a person wishes to hold an object of mass 5.75 kg so that her forearm remains...
An athlete is measuring the force by their flexor muscle by pulling a rope horizontally at a constant force. While pulling the rope the muscle applies a force on the forearm an angle of 71° as shown in the diagram. While keeping your forearm completely vertical, the tension in the rope is at 185N. The athlete's muscle is attached to the forearm 5 cm from the elbow joint and that the weight of your forearm is 22 N with a...
What is the torque that the static load generates about the elbow joint if the forearm is 30 degrees below the Hur arm is in the vertical position? The mass of the static load is 4 kg. The length of the forearm is 0.5 m. Biceps force Static load What is the torque that the static load generates about the elbow joint if the forearm is 30 degrees below the horizontal line and the upper arm is in the vertical...
Consider the case of the bicepts muscle acting on a forearm holding a 35 N weight. The forearm is 30 below the horizontal and the bicepts muscle inserts at an angle of 45 with the forearm. The muscle insertion is at 5 cm from the elbow joint. The forearm has a weight of 18 N and has its center of gravity 15 cm from the elbow. The 35 N weight is held in the hand 30 cm from the joint...
How much force (in N) must the biceps muscle exert when a 25.0 kg mass is held in the hand in a stationary position when the arm is 17.4° below the horizontal? Assume the mass of the forearm is 2.46 kg. Distances relative to the elbow joint are reb = 5.12 cm; recg = 16.5 cm; ren = 37.5 cm where the distances are: eb = elbow—biceps; ecg = elbow—forearm center of gravity; eh = elbow-hand. A marble column 0.890...
3) Bicep Curls Your elbow is the pivot point for your forearm. Your bicep attaches to your forearm at 0.05m. Your forearm is nominally 0.35m to the center of your hand, where you hold a weight the Earth on your forearm is 12N. a) Draw a free body diagram and an EFBD for when your forearm is parallel to the ground. b) The system is in static equilibrium. Sum the torques and the forces. Make sure you identify them all....
Assume that a 1.30-kg ball is thrown solely by the action of the
forearm, which rotates about the elbow joint under the action of
the triceps muscle, the figure. The ball is accelerated uniformly
from rest to 8.3 m/s in 0.30 s , at which point it is released.
Assume that the forearm has a mass of 3.7 kg and rotates like a
uniform rod about an axis at its end.
A) Calculate the angular acceleration of the arm.
B)Calculate...
1.80-kg carton of milk at arm's length (see the figure below). What force Fg must be exerted by the biceps muscle? (Ignore the weight of the forearm. State the magnitude of the force A cook holds N Milk 75.0 -25.0 cm- 8.00 cm
biceps 2) Suppose that the dumbbell has a mass of 10.0 kg (so its weight equals 98.0 N) and the arm that holds it has a mass of 2.2 kg (with a weight of 21.6 N). The weight acts 3.0 cm from the elbow joint and we can think of all of the mass of the arm as at a distance of 14.0 cm from the elbow. Find the force in the biceps muscle if it attaches 3.1 cm from...
The diagram above shows a side view of a person’s arm. The
forearm and hand together weigh 19N (WFH = 19N). The
center of gravity at point T is located 24cm from
the elbow joint. The person is holding a bowling ball 38cm from the
elbow and the ball weighs 47N (WB = 47N).
(a) Calculate the torque produced by the weight of the forearm
and hand about the elbow joint. Include the direction of the
torque.
(b) Calculate the...
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