Forces acting on a Bowler's Arm

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The discussion focuses on solving a physics problem related to the forces acting on a bowler's arm. Participants suggest starting with a free body diagram of the lower arm to identify all forces and reactions. There is uncertainty about the correctness of the free body diagram and the calculation of force F4. The method for balancing forces and moments is questioned, particularly for parts a and b of the problem. Clarification on these points is sought to ensure the approach is accurate.
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Homework Statement



sxhfeo.jpg


Homework Equations



T=rF

The Attempt at a Solution



I'm not sure at all how to solve this problem. If anyone can help me out with setting this up and proceeding from there that would be a big help.
 
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start with a free body diagram of the lower arm showing all forces and reactions, then balance forces and moments
 
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Is that free body diagram correct and what would the force be on F4? And is my method for part a and b correct?
 
Anyone know if the above is right?
 
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