Hydraulics and Fluid Mechanics in ME
The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)

(p/W) × (A/a)
(W/p) × (A/a)
(p/W) × (a/A)
(W/p) × (a/A)

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Hydraulics and Fluid Mechanics in ME
Meta-centric height is given as the distance between

The center of gravity of the body and the center of pressure
Center of buoyancy and metacenter
The center of gravity of the body and the center of buoyancy
The center of gravity of the body and the metacenter

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