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→Pressure and pressure differences in fluids
===Pressure and pressure differences in fluids===
*[[Pressure]]
**[[Normal (Physics)]]
*[[Fluid Pressure]]
*[[Atmospheric Pressure]]explain the variation with height*[[Upthrust]](Higher) ===Moments, Levers and gears===*[[Moment]]s**[[Centre of Mass]]*[[Lever]]s*[[Gear]]s