1. The problem statement, all variables and given/known data I have to find the Shear Force and Bending Moment diagrams for this problem. The lengths in the picture are 1.2m each and the peak force is 4kN/m and I calculated the support reactions to be: Ay=4,8kN (up) Ma= 5.76kN.m (anticlockwise) 2. Relevant equations These are what I'm looking for but failed to do... 3. The attempt at a solution I first section the beam 0<x<4 Efy=0 +4.8 -.5x*3.33x-Vx=0 I got the 3.33x by using similar triangles; if triangle 1 is (1,2;4) then sectioned triangle should be (x;y) so therefore 4/1.2=y/x x=3.33x this gave me Vx=-1.67x^3+4.8 which is wrong. Then EMo=0 +Mx +.5x*3.33x*(x/3) -4.8x +5.76=0 which gets me Mx=-0.56x^3 +4.8x +5.76 The correct answers for this question are: Vx=4.8 -(x^3/6) Mx=4.8x -(x^3/18) -5.76 I have a feeling I'm not using the triangle force correctly. Please advise.