BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Chapter 6, Problem 8AP
If the biceps brachii, attaching to the radius 2.5 cm from the elbow joint, produces 250 N of tension perpendicular to the bone, and the triceps brachii, attaching 3 cm away from the elbow joint, exerts 200 N of tension perpendicular to the bone, how much net torque is present at the joint? Will there be flexion, extension, or no movement at the joint? (Answer: 0.25 N-m; flexion)
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- If your biceps brachii muscle attaches to your forearm 2 inches below your elbow, the distance from the elbow to the palm of your hand is 18 inches, and you lift a 20 pound weight, how much pull must your muscle exert to achieve elbow flexion? If your biceps brachii muscle attaches to your forearm 2 inches below your elbow, the distance from the elbow to the palm of your hand is 18 inches, and you lift a 20 pound weight, how much pull must your muscle exert to achieve elbow flexion? hhharrow_forwardDetermine the angle of the shoulder if the torso angle is 88\deg and the upper-arm angle is -125\deg. This answer is this 33\deg BUT how do you calculate this to get that answer??arrow_forwardGiven the following ankle and knee coordinates calculate the partial internal knee angle to 1 decimal place Ankle z 0.129 m Ankle x 0.37 m Knee z 0.409 m Knee x 0.522 m Answer: re to search 8: T G B N W 8 M 9 O Pa P 4 3°C℃ Partly cloudyarrow_forwardGIVE 3 EXERCISES THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH LATERAL ROTATION AND MEDIAL ROTATION MOVEMENT AND WHY?arrow_forwardGIVE 3 EXERCISES THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH ABDUCTION AND ADDUCTION MOVEMENT. WHY?arrow_forwardThe flexors of the leg include all of the following except the: Question 29 options: biceps femoris rectus femoris semimenbranosus semitendinosus saritorius Question 30 The muscle fiber arrangement of the rectus femoris is: Question 30 options: bipennate and has greater potential for force bipennate and creates tension through a greater range fusiform and creates tension through a greater range fusiform and has greater potential for force.arrow_forwardA) Describe the difference between strength and power during a squat. Provide a quantitative example that illustrates the difference. B) During a squat, the weight you have on your shoulders has a certain amount of gravitational potential energy. As you squat down and come to a stop at the bottom of the squat, some of that energy is lost. Where does it go?arrow_forwardWrite the procedures of pickup the EMG signal to predicate the angle at the ankle jointarrow_forwardney: Load (L) = 5 kgs = Effort E = Fulcrum Weight of forearm = 1.8 kgs L = Load Biceps brachii muscle Distance of load from elbow joint = 35 cm %3D Effort (E) = contraction of biceps brachii Distance of center of mass of forearm from elbow = 17 cm Distance of tendon from elbow = 4 cm A) Draw the free-body diagram to represent the forces and moments Load (L) = weight of object plus forearm B) Write the torque equation for static equilibrium Fulcrum (F) = elbow jointarrow_forward5 of 10 Which of the following exercises would be an example of a Stabilization-Focused exercise for the shoulders? Standing cable row Bench press Single-leg dumbell overhead press shoulder press machine Next ▶arrow_forwardGIVE 3 EXERCISE THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH ABDUCTION AND ADDUCTION MOVEMENT (mixed, not seperated)arrow_forwardGive two example of 'curvature' movement?arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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