BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Chapter 7, Problem 9AP
9. What is the length of the moment arm between the dumbbell and the shoulder when the extended 50 cm arm is positioned at a 60° angle? (Answer: 43.3 cm)
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Students have asked these similar questions
5. Using the hip joint reaction force example we did in class, if the moment arm for the cane is
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have to be to reduce the muscle force to 1.5BW? Under that condition, what would the joint
reaction force be?
How much force must be produced by the biceps brachii, attaching at 90? to the radius
at 3 cm from the center of rotation at the elbow joint, to support a weight of 200 N held
in the hand at a distance of 30 cm from the elbow joint? (Neglect the weight of the
forearm and hand, and neglect any action of other muscles)
GIVE 3 EXERCISES THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH ABDUCTION AND ADDUCTION MOVEMENT. WHY?
Chapter 7 Solutions
BASIC BIOMECHANICS
Ch. 7 - Construct a chart listing all muscles crossing the...Ch. 7 - Prob. 2IPCh. 7 - Prob. 3IPCh. 7 - INTRODUCTORY PROBLEMS 4. List the muscles that...Ch. 7 - INTRODUCTORY PROBLEMS 5. List the muscles used as...Ch. 7 - INTRODUCTORY PROBLEMS 6. Explain how the use of an...Ch. 7 - INTRODUCTORY PROBLEMS 7. Select a familiar...Ch. 7 - 8. Using the diagram in Sample Problem 7.1 as a...Ch. 7 - 10. Solve Sample Problem 7.2 with the addition of...Ch. 7 - Identify the sequence of movements that occur at...
Ch. 7 - Which muscles are most likely to serve as agonists...Ch. 7 - Prob. 3APCh. 7 - ADDITIONAL PROBLEMS 4. Which muscles are most...Ch. 7 - Prob. 5APCh. 7 - Prob. 6APCh. 7 - 8. How much tension (Fm) must be supplied by the...Ch. 7 - 9. What is the length of the moment arm between...Ch. 7 - Prob. 10AP
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- Determine 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_forwardYour elbow and the muscles around it form a lever system for lifting things. Your biceps reaches from your upper arm and inserts 2 inches beyond your elbow joint. If you hold a barbell in your hand, the weight you are lifting when you do a bicep curl is 12 inches from your elbow joint. What is the mechanical ratio (Fload / Fmuscle) for the elbow in this case? 0.166 0.33 1 3arrow_forwardGIVE 3 EXERCISES THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH LATERAL ROTATION AND MEDIAL ROTATION MOVEMENT AND WHY?arrow_forward
- 5. This crosses the "heel" of the ankle joint and then spreads out along the "sole" of the foot to form a plantar aponeurosis, which in turn gives rise to other muscles and sends tendinous strands into each of the several digits а. А b. В С. С d. D е. Еarrow_forwardGive two example of 'curvature' movement?arrow_forward30³ V F2 ● 3 E CALF RAISES 80 F3 Bones Muscles Joint type(s) Movement(s) Name an activity you could do in daily life that uses the same movement as calf raises: MEDICINE BALL OVER/UNDER Bones Muscles Joint type(s) Movement(s) Name an activity you could do in daily life that uses the same movement as over and under: STRETCH BAND LATERAL RAISES 6,884 Bones Muscles Joint type(s) Movement(s) Name an activity you could do in daily life that uses the same movement as lateral raise: DUMBBELL FRONT SQUAT DEC 6 $ 4 a D F4 A % 5 G F5 W 0 F6 MacBook Air * 6 188880BA 7 F7 3 F8 P ( 9 F9arrow_forward
- 7. Describe flexion and extension, hyperextension, abduction and adduction, circumduction, and rotation. Focus DELLarrow_forwardWrite the procedures of pickup the EMG signal to predicate the angle at the ankle jointarrow_forwardIs there a difference in the time to fatigue of the dominant and non-dominant arm? Cite relevant experimental data.arrow_forward
- 3 E there to search D Calculate the ankle torque during initial gait contact from the following data set to 1 decimal place. NOTE if your answer is negative put the negative sign in the answer! FZ 765 N 4 с Fx-290 N CoP z 0 m Cop x 0.51 m Ankle z 0.074 m Ankle x 0.62 m Answer Check R F 96 5 Bi T G B 6 y H N U J 8 M 1 hp к Ji C 9 9 P O alt gr O P ? ctri 910- C > pri se 1 GBP/AUD-0.41% pause # ← tock Next page 7 11:26 02/12/2023 1 end ☐ po up 5 Carrow_forwardGIVE 3 EXERCISES THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH LATERAL ROTATION AND MEDIAL ROTATION MOVEMENT (mixed, not separated)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_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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