1. The problem statement, all variables and given/known data The problem is to figure out what acceleration is needed relative to a rotating disk to remain in the same spot(meaning to not rotate with the disk). 2. Relevant equations a=wr^2 3. The attempt at a solution I thought that since the Person remaining stationary would be rotating in the opposite direction from the viewpoint of a rotating system the acceleration needed would be w^r2 pointing radially inwards.