Recent content by mechanicstudy

Basically for the last three hours I have been struggling with this question. "Calculate the position of the centroid of a symmeterical t-section having a verticle stem 40mm wide by 120mm high, and a top section which is 80mm wide and 40mm high." The answer is meant to be 92mm but I have...

thank you. My notes just seem to neglect information like that and it has left me confused.

Finally i get it. Ok i got a questions to ask. 1: When does clockwise become negative? When i look at the notes i have been given. Sometimes its negative and sometimes it's not. Does it only become negative when an Anticlockwise force is present? thanks by the way.

I don't get how that would work. The 2.8 Force would have to go through 0.8m distance to get to point A.

I'm stuck on this problem at the moment. The answer is 19.08 nm clockwise but i just don't see how it can be. Check this. 2.8x(0.8+5.5)= 17.64 nm If I use the 4.6 it ends up 4.6x(0.8+5.5) = 28.98 nm I don't get how it can be 19.08 clockwise when there is only one force going...