Why the earth is rotating along its axis?

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SUMMARY

The Earth rotates on its axis due to the conservation of angular momentum from the primordial solar system, where gravitational forces caused matter to coalesce and spin. This rotation is common among planets, although the axes of rotation vary; for instance, Uranus has an axis almost perpendicular to its orbit, while Venus exhibits retrograde rotation with its axis nearly perpendicular to its orbital plane. The Moon, contrary to popular belief, does rotate on its axis, resulting in one side always facing Earth due to synchronous rotation. The discussion also highlights the impact of gravitational interactions and collisions in shaping planetary rotation.

PREREQUISITES
  • Understanding of angular momentum and its role in planetary motion
  • Familiarity with the concepts of rotation and revolution in celestial bodies
  • Knowledge of gravitational forces and their effects on planetary bodies
  • Basic comprehension of planetary formation theories
NEXT STEPS
  • Research the conservation of angular momentum in astrophysics
  • Explore the rotational dynamics of Uranus and its unique axial tilt
  • Learn about the Moon's synchronous rotation and its implications
  • Investigate the theories of planetary formation and the role of gravitational interactions
USEFUL FOR

Astronomers, astrophysics students, educators, and anyone interested in understanding planetary motion and the dynamics of celestial bodies.

  • #31
mehul ahir said:
or what type of forces made Earth rotating around the earth?please answer me in detail i m in very biggest trouble

Think about what happens when you pull the plug from a tub of water. Water from all directions rushes toward the drain, and the forces that the center of the drain are not perfectly symmetrical. That is to say, not all of the water molecules collide with one another "head-on." Some will pass by one another slightly to the left or the right.

Eventually, slightly more particles will pass to one side than the other. This on even force causes all the water around the drain to begin spinning in one direction. This is essentially what happened to the collapsing cloud of dust and gases that eventually formed the earth. Gravity caused them to collapse rapidly, rushing quickly toward a central point, and slight imperfections in the symmetry of the collisions made them spin.
 

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