3 m 4 m 400 N 0 1x 4 m 4 m 4 m 1y 1200 N 4y Calculate the Forces experienced by truss member of A, B and C, using the Sectional Method Calculating Reactions at point 1 and point 4, 1y = 300 N, 1x = 400 N, 4y =900 N Calculating the Forces in the members of A,B and C FA = 800 N (Compression); F = 500 N (Tension), Fc = 800 N (Tension) Task 1: Show all of these obtained values, by hand calculations.