Question

11.
In a bell crank lever reaction at fulcrum is 12 kN , if permissible bearing stress is 8MPa calculate diameter of pin.

Answer 1

$F = A × P\\ F = π ×(d²/4) × P\\$

$d =\sqrt{\dfrac{ 4F}{π×P }}=\sqrt\dfrac{4×12×10³}{π×8×10⁶} =$

$0.044m = 4.4cm$