Physics A-Level
Hydrostatic equilibrium
What Hydrostatic equilibrium means in Physics A-Level, as defined for OCR.
Definition of Hydrostatic equilibrium
Check what you remember
Read the wording for your board, then hide it and explain Hydrostatic equilibrium in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
A stable main-sequence star exists when inward gravitational force balances outward pressure.
Topics that use Hydrostatic equilibrium
- Stars (OCR A-Level)
Related terms
- Black hole
- Chandrasekhar limit
- Electron degeneracy pressure
- Gravitational collapse
- HR diagram
- Main sequence
- Neutron star
- Planet
Using Hydrostatic equilibrium in the exam
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