Task id16458

From the deck of a sea motor ship, located at a height h = 1.5 m above the water, a thin aluminum rod of length l = 50 cm falls into the water (Fig.). At what speed v will the rod fall to the bottom if the water depth at this motor ship anchorage is H = 3.0 m? The density of sea water is p = 1.03 103 kg/m3, of aluminum p = 2.65 103 kg/m3. Neglect the resistance of air and water to the movement of the rod. During the fall, the rod is in a vertical position.