# A simply supported beam in figure 2 is subject to two concentrated loads.Find support reactions Ra and Rb.?

Mar 20, 2018

${R}_{A} = 10 N$ and ${R}_{B} = 270 N$

#### Explanation:

First, forces equilibrium

${R}_{A} + {R}_{B} - 200 - 80 = 0$

Second, momenta equilibrium

$- 200 \times 3 + {R}_{B} \times 4 - 80 \times 6 = 0$

solving for ${R}_{A} , {R}_{B}$

${R}_{A} = 10 N$ and ${R}_{B} = 270 N$