Question

Torsional Deformation of a Circular Shaft Learning Goal: To calculate torsional deformation and shear stress due to an applied force in a door handle design. A locked door handle is composed of a solid orcular shaft AB with a diameter of b 101 mm and a flat plate BC with a ferce P-65 N applied at point C as shown Let c 523 mm,d 135 mm, and e 157 mm (Treat the hande as if it were a cantilever beam) Part A-Maximum torsional shear stress in section m-m Determine the maximum torsional shear stress Tmax experienced by the solid shaft in section m-m Express the shear stress to three significant figures and include appropriate units View Available Hint(s) xValue MPa Submit Previous Answers X Incorrect; Try Again; 5 attempts remaining Part B-Design of a hollow tube as a replacement for the solid shaft To reduce cost, the manufacturer of the door handle would lke to change the soid shaft AB to a hollow one it the force P and the maximum shear stress remain constant, design a holow sube that replaces the solid one i the outer diameter is 128 mm Express the inner radius to three significant figures and include appropriate units View Available Hint(s) Value Units Part C-Maximum force that the rod can support given a maximum allowed shear stress If the maximum allowable shear stress is Tallore 161 MPa , determine the maximum force P that can be applied to the door handle. (Recall that piece AB is now a hollow tube.) Express the maximum force to three significant figures and include appropriate units View Available Hint(o) P Value Units Submit

Answer 1