Mechanical Properties of Fluids
Class 11 · Mechanical Properties of Fluids

Pressure vs Depth

P = P₀ + ρgh — see pressure grow linearly with depth in any fluid.

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Key Notes

01

Pressure in a static fluid increases linearly with depth: P = P₀ + ρgh.

02

Independent of container shape — pressure depends only on vertical depth.

03

P₀ is the pressure at the surface (usually atmospheric, 101.3 kPa).

Formulas

Hydrostatic pressure

h = depth below the surface.

Important Points

1 m of water adds ~9800 Pa (~10% of atmospheric pressure).

Submarines must withstand huge ΔP at deep ocean (~1000 atm at 10 km).

Pressure vs Depth notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.