| http://www.w3.org/ns/prov#value | - It is easy to see that by increasing the pumping rate we can keep the stone from dropping to the bottom of the tube.Consider if our pump is at its highest speed but the stone is so heavy that it still drops to the bottom.What would happen if we replace the water in the tube with a fluid that has a higher viscosity than water - like drilling mud?The fluid with a higher viscosity pushes harder again
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