How is the state of hydrostatic equilibrium maintained within a star?
Answer
By the balance between outward energy pressure and inward gravitational pull
Hydrostatic equilibrium is the condition where a star remains stable. The inward crushing force of gravity is constantly trying to collapse the star, but this is perfectly countered by the outward pressure generated by the energy released during nuclear fusion. When these two forces are in balance, the star maintains its spherical structure and stability.
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