Hi all, I'm trying to understand how the forces can modelled in a mass which is resting on the Earth's surface. Please see attached diagram. It can be assumed that the mass is fixed to the bar and that bar is free to move where it is resting on the Earth's surface. According to my thinking the mass at the top of the bar has higher momentum due to a higher velocity and mass than that which is at the bottom of the bar, hence this should cause the bar to topple over once any stabilising force is removed. Am I correct in thinking this? Thanks for any help.