3. A 170-kg granite rock (p = 2700 kg/m2) is dropped into a lake. A man dives in and tries to lift the rock. Determine h

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3 A 170 Kg Granite Rock P 2700 Kg M2 Is Dropped Into A Lake A Man Dives In And Tries To Lift The Rock Determine H 1 (41.93 KiB) Viewed 81 times

3. A 170-kg granite rock (p = 2700 kg/m2) is dropped into a lake. A man dives in and tries to lift the rock. Determine how much force the man needs to apply to lift it from the bottom of the lake. Do you think he can do it? 4. A large tank is initially filled with water 2 m above the center of a sharp-edged 10-cm- diameter orifice. The tank water surface is open to the atmosphere, and the orifice drains to the atmosphere. If the total irreversible head loss in the system is 0.3 m, determine the initial discharge velocity of water from the tank. Take the kinetic energy correction factor at the orifice to be 1.2.