Question

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

Answer 1

`R_A = 10N` and `R_B = 270N`

Explanation:

First, forces equilibrium

`R_A+R_B-200-80=0`

Second, momenta equilibrium

`-200 xx 3+R_B xx 4-80 xx 6 =0`

solving for `R_A, R_B`

`R_A = 10N` and `R_B = 270N`