Recent content by jukos

I found the centroid of four sections, 2 semicircles, 1 rectangle (xz plane) and the remaining right triangle. I tabulated the individual centroids (x,y,z) of the 4 sections, multiplied each one with the Area of respective section. In the end I calculated the required (x,y,z) by dividing (sum of...

thanks, What confuses me the most is they interchange Moment of Forces and Couples in problems without any distinction. If I'm getting this right, the answer of this should be Ans: I can't find Moment about S using the info on Moment about P

1) are all Moments of forces and Moments of couples free vectors? Can I move the moment vector computed about point O to a new point "point B" without changing the system? To elaborate on the question, suppose Resultant Moment about point O is computed using several forces and the position...

I have problems understanding the sense of reactive forces generated at pins / connections. Book is by Hibbler, I am posting links to images which will better explain my questions. The following links are concerning reactive forces. 1# http://i.imgur.com/0x62lp2.png 2#...