(a) Calculate the magnitude of the force FM required of the \"deltoid\" muscle t

Question

(a) Calculate the magnitude of the force FM required of the "deltoid" muscle to hold up the outstretched arm shown in Fig. 9-65. The total mass of the arm is 3.2 kg and ? = 18.

N

(b) Calculate the magnitude of the force FJ exerted by the shoulder joint on the upper arm.

N

(a) Calculate the magnitude of the force FM required of the deltoid muscle to hold up the outstretched arm shown in Fig. 9 - 65. The total mass of the arm is 3.2 kg and ? = 18 . N (b) Calculate the magnitude of the force FJ exerted by the shoulder joint on the upper arm. N

Explanation / Answer

balancing moment at point where Fj acts gives us
FM*0.12sin18 = 3.2*9.8*.24

FM = 202.977 N

balancing force along y axis

Fj = Fmcos18

= 193.04 N

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.