im stuck on question 6
i am having trouble finding the centroid of the triangle. i plan on getting forces up=forces down and then taking my moments. i heard you have to take moments twice for the question. i do not know where in should take moments through.
The coordinates of the "centroid" of a triangle is simply the average of the coordinates of the three vertices. That is, if the coordinates of the three vertices of a triangle are , and then the centroid is .
so i have got 3 equations 4w/3 +w=t1+t2+t3 from forces up=down. taking moments through Q 5(t1)+4(t3)=√5(4w/3)+√ 13/3(w)
taking moments through R 4t2+3t1=√5(4w/3)+5/3 (w)
i cant solve these though