Question: A 50-kg frictionless piston fits inside a 20-cm-diameter vertical pipe and is pulled up to a height of 6.1 m. The pipe's lower end is

A 50-kg frictionless piston fits inside a 20-cm-diameter vertical pipe and is pulled up to a height of 6.1 m. The pipe's lower end is immersed in water, and atmospheric pressure is 100 kPa. The gravitational acceleration is 9.45 m/s ² .Determine {a) the force required to hold the piston at the 6.1-m mark; (b) the pressure of the water on the underside of the piston.

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