1. The problem statement, all variables and given/known data A hemispherical dome filled with water, radius 2 m and weight 30 tons, can be lifted by giving it a constant angular velocity around its vertical line of symmetry. The dome has a hole on the top. Decide the minimum angular velocity. My answer is 2.91 rad/s . The correct answer is 1.95 rad/s. 2. Relevant equations Shown in the attached picture. 3. The attempt at a solution Shown in the attached picture.