1. The problem statement, all variables and given/known data A 5kg block starts at the top of a fixed frictionless sphere of radius 10m. The ball is given a slight nudge, enough to get it going by the force of gravity (this happens on Earth) but of negligible magnitude. What is the angle, relative to the vertical line from the bottom to the top of the sphere, at which the block leaves the surface of the sphere? 2. Relevant equations (I don't know) 3. The attempt at a solution I don't even know where to begin with this. Perhaps consider normal force at angle theta, and integrate or something like that?