Question

Determine the end reactions for the simply supported beam of Figure  which is subjected to an anti-clockwise couple of 5 kN m at the point C

Answer 1

Taking moments about B gives:

R_A × 3 m = 5 kN m ........(5.4)

from which, R_A = 5/3 kN

or R_A = 1.667 kN

Resolving forces vertically gives:

i.e. R_A + R_B = 0

from which, R_B = −R_A = −1.667 kN