1. The problem statement, all variables and given/known data
A rectangular container partly filled with water up to height , after being slightly disturbed , the urface of water begins to slosh . Assume that the water surface remains practically flast during sloshing , find the time period of the sloshing mode. take width to be
3. The attempt at a solution
I tried to put up the equation of energy , and differentiating it .
θ be the angle made by surface and the slant made by surface after slosh ,
1/2 Iω2 + mgh = U
but this doesnt lead me anywhere, can some one please tell what should i add in the energy equation .