For the truss shown in the figure, the magnitude of the

For the truss shown in the figure, the magnitude of the force (in kN) in the member SR is

R_p + R_x = 30000
∑M_P = 0
R_x × 3 = 2 × 3000
⇒ R_x = 20 kN and R_p = 10 kN
For balance at ‘x' → F_Rx = 20 kN
at ‘RT’ → F_RT cos 45 = 20

⇒ F_RT =	20	...(i)
	cos 45

Also F_SR = F_RT cos 45... (ii)
From equations (i) and (ii),
F_SR = 20 kN