Question

A beam ABC is shown below. The moment reaction developed at intermediate support 'B' is

• A. 27.5 kN-m
• B. 36 kN - m
• C. 24 kN-m
• D. 56.75 kN-m

Answer 1

The correct option is A 27.5 kN-m

Let us draw FBD of the structure

$\frac{12\times 5^3}{24EI}-\frac{M_B\times 5}{3EI}=-\frac{20\times 4^2}{16EI}+\frac{M_B\times 4}{3EI}$

$\Rightarrow M_B=27.5kN-m$