(Solved): 1-73. The cotter is used to hold the two rods together. Determine the smallest thickness \( t \) o ...

1-73. The cotter is used to hold the two rods together. Determine the smallest thickness \( t \) of the cotter and the smallest diameter \( d \) of the rods. All parts are made of steel for which the failure normal stress is \( \sigma_{\text {fail }}=500 \mathrm{MPa} \) and the failure shear stress is \( \tau_{\text {fail }}=375 \mathrm{MPa} \). Use a factor of safety of (F.S.) \( )_{t}=2.50 \) in tension and (F.S.) \( )_{s}=1.75 \) in shear.