Use the worked example above to help you solve this problem. A W = 54.5 N (12.3

Question

Use the worked example above to help you solve this problem. A W = 54.5 N (12.3 lb) weight is held in a person's hand with the forearm horizontal, as shown in the figure. The biceps muscle is attached d = 0.03011 m from the joint, and the weight is l = 0.352 m from the joint. Find the upward force F exerted by the biceps on the forearm (the ulna) and the downward force R exerted by the humorous on the forearm, acting at the joint. Neglect the weight of the forearm. F = N R = N Use the values from PRACTICE IT to help you work this exercise. Suppose you wanted to limit the force acting on your joint to a maximum value of 7.99 times 10^2 N. (a) Under these circumstances, what maximum weight would you attempt to lift? N (b) What force would your biceps apply while lifting this weight? N

Explanation / Answer

From givn data
Fx0.03011=54.5x0.352
F=637.13N
For equilibrium
F = 54.5+R
R=582.6N

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

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