Challenge question #$3$

A shot put is being held in static equilibrium.

A$)$What force $(F_m)$ must be exerted by the deltoids to maintain this state?

B$)$ How much more force must the deltoid exert with the shot in hand, compared to without the shot in hand?

C$)$What joint reaction forces $($Fsy$,$ Fsx$)$ are required when the shot is not in hand?