15 Problem 2.53Panel ABC in the slanted side of a water tank is an isosceles triangle with the vertex at A and the base BC=2 m, as in Fig. P2.53. Find the water force on the panel and its line of action.
21 Problem 2.127Consider a cylinder of specific gravity S < 1 floating vertically in water (S = 1), as in Fig. P Derive a formula for the stable values of D/L as a function of S and apply it to the case D/L = 1.2.
23 Problem 2.128An iceberg can be idealized as a cube of side length L, as in Fig. P If seawater is denoted by S =1.0, then glacier ice (which forms icebergs) has S=0.88. Determine if this “cubic’’ iceberg is stable for the position shown in Fig. P2.128.
25 Problem 2.129The iceberg of Prob may become unstable if its width decreases. Suppose that the height is L and the depth into the paper is L but the width decreases to H < L. Again with S = 0.88 for the iceberg, determine the ratio H/L for which the iceberg becomes unstable.