I was on this question for over 45 minutes and I was stumped! I really have no idea what to do! Please help!
The diagram above shows a pillar (lying horizontally) made of two uniform sections X and Y each of cross-sectional area . The sections are made from two different materials. The weights of X and Y are shown in the diagram acting through the centre of gravity of each section.
The pillar will balance horizontally when supported vertically below point P.
Show, using the principle of moments, the the point P is 1.2m from the end of the pillar (the right side of section Y).