Task 1:
Construct the shear force and bending moment diagrams for the beam shown in figure.
Show where maximum sagging and hogging occurs and estimate the position of the point of contraflexure with respect to A.
Calculate analytically the position of contraflexure and explain its significance.
Task 2:
Plot the shear force and bending moment diagrams for the three pin frame shown in Figure.
Define the main structural characteristics of a pin joint and describe an existing structure where such joints are used and why.
