Problem 9.31 Part A Suppose the point of insertion of the biceps muscle into the

Question

Problem 9.31 Part A Suppose the point of insertion of the biceps muscle into the lower arm shown in (Figure 1) is 6.0 cm How much mass could the person hold with a musde exertion of 420 N? Express your answer to two significant figures and include the appropriate units. m=1 Value II Units | Submit My Answers Give Up Incorrect; Try Again; 4 attempts remaining; no points deducted One cr more of the units you entered is not recognized. Click help to view a list of recognized units Figure 1 # of 1 FM CG (2.0 kg) 5 cm 35 cm

Explanation / Answer

balancing torque about the joint point,

M = (6 x FM) - (15 x 2 x 9.81) - (35 x W) = 0

(6 x 420) - (30 x 9.81) = 35 W

W = 63.6 N

m = W/ g = 6.48 kg .......Ans

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