Question

Consider the simply supported beam AB subjected to the point loads of equal magnitude shown in the diagram below:




The portion CD of the beam is

• A. in pure bending
• B. in pure shear
• C. having maximum bending moment
• D. having maximum shear force

Answer 1

The correct option is A in pure bending

(a)
The SFD and BMD of the beam will show that portion CD has $\frac{WL}{3}$ moment but zero shear force and so it is subjected to pure bending.