Answer to Question #167561 in Mechanical Engineering for Ahmed

Question

Design and draw a right-angled bell crank leaver to raise a Vertical load of 8560 N at the longer arm end. The arm length are 60 cm. The permissibe stresses in shear and tension for the lever and pin materials must be below 6000 N/Cm^2 , respectiviely. Maximum bearing stress of pins is 15 N/mm^2

Answer 1

Consider the diagram below