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*34. (I) Approximately what force, Fy, must the extensor muscle in the upper arm exert on the lower arm to hold a 7.3-kg shotput (Fig. 9-57)? Assume the lower arm has a mass of 2.8 kg and its CG is 12 cm from the pivot point.

*34. (I) Approximately what force, Fy, must the extensor muscle in the upper arm exert on the lower arm to hold a 7.3-kg shotput (Fig. 9-57)? Assume the lower arm has a mass of 2.8 kg and its CG is 12 cm from the pivot point.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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Questions 34-37 I'm struggling to solve and need a detailed explanation of how to make the free body diagram. Thanks!
Achilles 2.5 cm 30.0 cm tendon elbow joint FM FIGURE *39. (III) Calculate the m. of the spine, Fy in mass of 20 kg is held hanging vertically. A. *40. (III) When walking, weight on one foot. supporting foot. Fig leg and the forces on the "hip abductor' components of the the whole leg as the FIGURE 9-57 Problem 34. *SECTION 9-4 *33. (I) If the point of insertion of the biceps muscle into the lower arm shown in Fig. 9-14a is 6.0 cm, how much mass could the person hold with a muscle exer- tion of 400 N? *34. (I) Approximately what force, FM, must the extensor muscle in the upper arm exert on the lower arm to hold a 7.3-kg shotput (Fig. 9-57)? Assume the lower arm has a mass of 2.8 kg and its CG is 12 cm from the pivot point. *35. (II) Calculate the force required of the "deltoid" muscle, FM, to hold up the outstretched arm shown in Fig. 9-58. The total mass of the arm is 3.1 kg. FM 70 *36. (II) Suppose the hand in the last problem holds a 12-kg mass. What force, FM, is required of the deltoid muscle, assuming the mass is 52 cm from the shoul- der joint? *37. (II) Calculate the magnitude of the force F, exerted by the shoulder on the upper arm at the joint for Prob- -7. cn lems 35 and 36. 10 cm FM 15° W1 F, mg +12 cm A 24 cm FIGURE 9-58 Problems 35, 36, and 37. honor 8X *38 (ID The Achilles tendon is ottoohad
Transcribed Image Text:Achilles 2.5 cm 30.0 cm tendon elbow joint FM FIGURE *39. (III) Calculate the m. of the spine, Fy in mass of 20 kg is held hanging vertically. A. *40. (III) When walking, weight on one foot. supporting foot. Fig leg and the forces on the "hip abductor' components of the the whole leg as the FIGURE 9-57 Problem 34. *SECTION 9-4 *33. (I) If the point of insertion of the biceps muscle into the lower arm shown in Fig. 9-14a is 6.0 cm, how much mass could the person hold with a muscle exer- tion of 400 N? *34. (I) Approximately what force, FM, must the extensor muscle in the upper arm exert on the lower arm to hold a 7.3-kg shotput (Fig. 9-57)? Assume the lower arm has a mass of 2.8 kg and its CG is 12 cm from the pivot point. *35. (II) Calculate the force required of the "deltoid" muscle, FM, to hold up the outstretched arm shown in Fig. 9-58. The total mass of the arm is 3.1 kg. FM 70 *36. (II) Suppose the hand in the last problem holds a 12-kg mass. What force, FM, is required of the deltoid muscle, assuming the mass is 52 cm from the shoul- der joint? *37. (II) Calculate the magnitude of the force F, exerted by the shoulder on the upper arm at the joint for Prob- -7. cn lems 35 and 36. 10 cm FM 15° W1 F, mg +12 cm A 24 cm FIGURE 9-58 Problems 35, 36, and 37. honor 8X *38 (ID The Achilles tendon is ottoohad
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