Assignment:
Question 1. (a) Calculate the force required to punch out a rectangular hole 100m x 50mm in a 2mm thick aluminium sheet. The ultimate strength in shear is 125 MN/m^2.
(b) If the maximum force which can be exerted by the press is 45kN, what is the greatest thickness that can be punched out?
Question 2. Two co-axial shafts are to be connected by a flanged coupling having six 6mm diameter bolts equally spaced on a PCD of 200mm. If the maximum permissible shear stress in the bolt material is 180 MN/m^2, find the factor of safety for the bolts if the coupling transmits a torque of 2KNm.
Provide complete and step by step solution for the question and show calculations and use formulas.