Question

A cantilever AB is loaded as shown in the figure given below. What is the shape of the bending moment diagram for portion AC?

• A. Parabolic
• B. Linearly varying with maximum value of bending moment at C
• C. Linear with constant bending moment value from C to A
• D. Linearly varying with maximum value at A

Answer 1

The correct option is D Linearly varying with maximum value at A

There is no load on portion AC, so shear force remains constant throughtout AC. Therefore the shape of BMD between AC will be linearly varying with maximum value at A.