Question

The given figures show a beam with its influence line for shear force and bending moment at section '1':



The values of the shear force and bending moment at section '1' due to a concentrated load of 20 kN placed at mid-span will be

• A. 7.5 kN and 10 kN-m
• B. 10 kN and 30 kN-m
• C. 5 kN and 5 kN-m
• D. 0.75 kN and 2.25 kN-m

Answer 1

The correct option is B 10 kN and 30 kN-m

$Shearforce=0.75\times \frac{2}{3}\times 20=10kN$

$Bendingmoment=2.25\times \frac{2}{3}\times 20=30kN-m$