고체역학 (Beer) — Introduction—Concept of Stress: Problem 1.25

1.25 Knowing that a force **P** of magnitude 750 N is applied to the pedal shown, determine (a) the diameter of the pin at $C$ for which the average shearing stress in the pin is 40 MPa, (b) the corresponding bearing stress in the pedal at $C$, (c) the corresponding bearing stress in each support bracket at $C$.