I'm having trouble in designing a c-wrench (see attached pic).
Basically the problem revolves around the load calculations from which the dimension for the wrench can be produced.

The reactions are assumed to be at the circled points, whereas the only forces acting on it are taken as a worst case scenario (at the very end - arrow).

How can the reactions at both points be calculated since it's not a straight beam but rather an arc. Also at the tip of the hook is a tooth or key which fits into the slotted brackets.

A quick run through reaction calculations would be greatly appreciated.