The horizontal beam is supported by springs at its ends. If the stiffness of the spring...

The horizontal beam is supported by springs at its ends. If the stiffness of the spring at A is k_A = 5 kN/m, determine the required stiffness of the spring at B so that if the beam is loaded with the 800 N it remains in the horizontal position. The springs are originally constructed so that the beam is in the horizontal position when it is unloaded.