Question

Explain hydrostatic equilibrium.

   Explain hydrostatic equilibrium.

21st Century Astronomy

21st Century Astronomy

Laura Kay, Stacy… 4th Edition

Chapter 8, Problem 34

Instant Answer

Solved by Expert Zachary Warner

06/21/2020

Step 1

Gravity is the force that pulls matter inward, towards the center of the star. On the other hand, pressure is the force that pushes matter outward, away from the center of the star. In a star, these two forces are in constant competition. Show more…

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Explain hydrostatic equilibrium.

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Key Concepts

Hydrostatic Equilibrium

Hydrostatic equilibrium is the state in a fluid or gas where the outward pressure forces exactly balance the inward forces due to gravity. This balance is crucial in astrophysical objects and planetary atmospheres, ensuring their stability and maintaining their structure over time.

Pressure Gradient

The pressure gradient represents the variation of pressure with respect to position within a fluid. In a condition of hydrostatic equilibrium, this gradient creates a force that opposes gravity, with pressure typically increasing in the direction opposite to the gravitational pull to prevent collapse.

Gravitational Force

Gravitational force is the attractive force exerted by mass, acting to pull matter inward. In systems in hydrostatic equilibrium, gravity’s inward pull is counteracted by the pressure gradient force, enabling a stable and balanced configuration.

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