A three-legged tube is filled with oil (SG = 0.88). As shown, the surfaces of oil in all legs are at the same height when the tube is at rest. Calculate, (a) the maximum angular velocity, w in rpm), that the tube can be rotated at leg 1 without causing any spillage of oil; (b) the new height (in cm) of oil in leg 2; and (c), the corresponding pressure (in Pa) at point A. The diameter of the tube is the same on all its legs. h - 43cm a-19cm b-11cm C-76cm h a b