1. The problem statement, all variables and given/known data A sphere is making small oscillations on a parabolic surface . The equation of the parabola is y= 0.5kx^2 . Find the time period of this small oscillation. 2. Relevant equations accln. (c.o.m)= 5/7 g sinѲ tanѲ= Ѳ ( for small angles) sinѲ=Ѳ (for small angles) 3. The attempt at a solution I tried to find about the moment of the ball about the focus of the parabola but then in addition with theta it came up with an x variable and thus I am unable to apply SHM rules.