Question

A fixed beam is loaded as shown in fig. The fixed end reaction at support B is

• A. $\frac{wl}{10}$
• B. $\frac{3wl}{20}$
• C. $\frac{7wl}{20}$
• D. $\frac{7wl}{30}$

Answer 1

The correct option is B $\frac{3wl}{20}$



$WeknowFEMatA=\frac{w{l}^2}{20}$

$VerticalreactionatB=\frac{\frac{w{l}^2}{6}}{l}-\frac{(\frac{w{l}^2}{20}-\frac{w{l}^2}{30})}{l}$

$=\frac{3wl}{20}$