1. A Douglas fir beam is 6 in. wide and 14 in. deep. Compute the radius of curvature of the beam if it is subjected to a constant bending moment of 200,000 lb-in.
2. A solid, round simply supported steel shaft has a diameter of 38 mm and a span length of 800 mm. The shaft supports a concentrated load of 3 kN at midspan. Calculate the maximum deflection of the shaft.