Posted by pete on Monday, November 15, 2010 at 3:25pm.
You have to assume a cg for the arm. Assuming midway...
4.57*67/2+5.29*67 in N-cm of torque
What is the magnitude of the torque about his shoulder if he holds his arm straight, but 43.8° below horizontal?
I tried multiplying the torque force by sin43.8 but it was wrong :(
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