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Question: 

Suppose the hand in Problem 34 holds an 8.5-kg mass. What force, $F_M$, is required of the deltoid muscle, assuming the mass is 52 cm from the shoulder joint?

Problems 34 and 35.

Figure 9-72.

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

$1600 \textrm{ N}$

Giancoli 7th Edition, Chapter 9, Problem 35

(2:30)

Chapter 9, Problem 35 is solved.

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