How is gravity responsible for the orbits of the Earth moon and sun and how gravity and rotation keep Earth in orbit around the Sun?
Respected sir
Rk Naresh
Gravity is the primary force responsible for the orbits of celestial bodies like the Earth, Moon, and Sun within our solar system. Let's explore how gravity influences these orbits and how the combination of gravity and rotation keeps Earth in orbit around the Sun:
Gravity is the fundamental force that governs the orbits of celestial bodies like the Earth, Moon, and Sun. The gravitational attraction between these bodies provides the necessary centripetal force to keep them in stable orbits. The combination of gravity and the rotational motion of these bodies contributes to the complex dynamics observed in our solar system, allowing Earth to maintain its orbit around the Sun over vast cosmic timescales.
The Sun's gravitational force is like the tetherball rope, in that it constantly pulls Earth toward it. Earth, however, like the tetherball, is traveling forward at a high rate of speed, which balances the gravitational effect. This means that the planet neither flies out into space nor falls into the Sun. It pulls every one of the planets (and everything else) toward its center of mass. Essentially there was a tug-of-war between the inertia of the planets and the gravitational force of the Sun. Those unbalanced forces pulled the planets in two directions at once, ultimately resulting in a circular force.It constantly moves around us. Without the force of gravity from the Earth, it would just float away into space. This mix of velocity and distance from the Earth allows the Moon to always be in balance between fall and escape. If it was faster, it would escape; any slower and it would fall. The type of force that keeps the Earth in orbit around the Sun is gravity. Gravity is the weakest fundamental force in physics yet the mass of the Sun and the Earth generates enough gravity to keep the Earth anchored in its orbit. This means the oceans on the near side of the moon are pulled away from Earth into a bulge, and Earth's center is pulled away from the oceans on the far side of Earth. This is what causes tides. The sun also causes tides, and its effects on Earth are most notable during spring tide and neap tide. As the Sun is very large, it exerts a great gravitational force on Earth. The Sun's gravitational force is like the tetherball rope, in that it constantly pulls Earth toward it. Earth, however, like the tetherball, is traveling forward at a high rate of speed, which balances the gravitational effect. The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them. The Sun's gravitational force is like the tetherball rope, in that it constantly pulls Earth toward it. Earth, however, like the tetherball, is traveling forward at a high rate of speed, which balances the gravitational effect. This means that the planet neither flies out into space nor falls into the Sun. To move in a curved path, a planet must have acceleration toward the center of the circle. This is called centripetal acceleration and is supplied by the mutual gravitational attraction between the Sun and the planet.