Hi. I am trying to calculate the 'kicking out' force created when an object topples over. Attached is a picture of what I mean. The body in the picture topples in a clockwise direction as shown, with its initial pivot point at 'a'. The centre of gravity of the body is shown as cg. Now I have been told that there is a force that causes the rod to kick back from this pivot position due to the centre of gravity that 'wants' to fall straight down. How would I work this out?