What causes tidal gravitational forces?

Click For Summary
SUMMARY

Tidal gravitational forces arise from the differential gravitational pull experienced by different parts of an object due to nearby massive bodies. For instance, when two stars are in close proximity, the gravitational force exerted by one star can be significantly stronger on one side than the other, potentially leading to the destruction of the star. This phenomenon is particularly pronounced near black holes and other high-mass objects. On Earth, tidal forces manifest as ocean tides, occurring approximately twice daily due to the gravitational influence of the Moon.

PREREQUISITES
  • Understanding of gravitational forces and their effects
  • Basic knowledge of celestial mechanics
  • Familiarity with black hole physics
  • Concept of tidal forces in astrophysics
NEXT STEPS
  • Research the mechanics of tidal forces in binary star systems
  • Explore the effects of tidal forces near black holes
  • Study the relationship between the Moon's gravitational pull and ocean tides
  • Learn about the role of mass and density in gravitational interactions
USEFUL FOR

Astronomers, astrophysicists, students of physics, and anyone interested in understanding the effects of gravitational forces in celestial bodies.

shirin
Messages
47
Reaction score
0
what is tidal gravitational force?
 
Astronomy news on Phys.org
Tidal forces are due to the difference in gravitational force on different parts/sides of an object.

Standing upright, on the surface of the earth, there is slightly strongly gravity acting on your feet, than on your head---the difference is so small that you would never notice it.

When you have two stars near each other, however, the effect can be significant. If stars (for example) are near enough, the gravitational force from the other star can be significantly stronger on one side, than on the other. This can lead to the star being torn apart. The effect is especially important near black-holes, and other high-mass & high-density objects. Even on such 'small' scales as the Earth and moon, tidal effects are clearly apparent, however, as they create the tides ~2 times a day.
 

Similar threads

Undergrad Why Do Stars in Binary Systems Assume a Teardrop Shape?
  • · Replies 14 ·
Replies
14
Views
2K
High School Gravitational effects of a small black hole passing your body
  • · Replies 1 ·
Replies
1
Views
1K
High School The Impact of Tidal Force on a Star's Magnetic Field and Supernova
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Tidal forces acting on planet NGTS-10b
  • · Replies 2 ·
Replies
2
Views
3K
Stargazing Can Stars Be Spaghettified in a Matter of Days by Black Holes?
  • · Replies 17 ·
Replies
17
Views
3K
High School Tidal Locking question about the Earth-Moon system
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Comparison of tidal forces acting on the Moon vs Enceladus
  • · Replies 56 ·
2
Replies
56
Views
7K
High School Tidal locking for planets of K type (orange) dwarf stars
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad Orbit simulations, tidal forces and planetary oblateness
  • · Replies 10 ·
Replies
10
Views
3K
High School Can gravitational force have influence on objects at infinitely long distances?
  • · Replies 3 ·
Replies
3
Views
2K