How the interaction of inertia and gravity keeps Earth in orbit around the sun and gravity cause objects to fall and keep satellites in orbit?
first you must know, what the source for inertia is. then you can answer this question.
Inertia and Gravity
- Inertia is the tendency of an object to resist changes to its motion. It is also known as Newton's first law of motion.
- Gravity is a force that attracts any two objects with mass. The more mass an object has, the stronger its gravitational pull.
How Inertia and Gravity Keep Earth in Orbit Around the Sun
The Earth is constantly falling towards the Sun due to gravity. However, it is also moving in a straight line due to inertia. The balance of these two forces keeps the Earth in a stable orbit around the Sun.
If the Earth were to suddenly stop moving, it would fall directly into the Sun. This is because gravity would be the only force acting on it. If, on the other hand, the Earth were to suddenly stop falling towards the Sun, it would fly off into space. This is because inertia would be the only force acting on it.
How Gravity Causes Objects to Fall
When you drop an object, it falls to the ground because of gravity. The Earth's gravitational pull attracts the object towards it. The more mass the object has, the stronger the gravitational pull, and the faster it will fall.
How Gravity Keeps Satellites in Orbit
Satellites are kept in orbit around the Earth by gravity. The Earth's gravitational pull keeps them from flying off into space. However, satellites are also moving very fast, which gives them a lot of inertia. This inertia keeps them from falling to the ground.
The balance of gravity and inertia is what keeps satellites in a stable orbit around the Earth. If a satellite is moving too fast, it will fly off into space. If a satellite is moving too slow, it will fall to the ground.
Conclusion
Inertia and gravity are two of the most fundamental forces in nature. They work together to keep the Earth in orbit around the Sun, cause objects to fall, and keep satellites in orbit.
In general, the stronger the force of gravity, the more speed is needed to keep the planet falling around, instead of into, the object it is orbiting. Because the force of gravity weakens with distance, there is less gravity farther away from the Sun, so less speed is needed to keep an object in orbit. Gravity - Same dip (curve) due to mass (energy) of the body manifests as gravity for other bodies. So, their origin is same and that is curving of space. Inertia is nothing but gravity of the body acting on itself against any change of state. Therefore gravitational and inertial mass are same. The force of gravity pulls a planet toward the Sun. Inertia keeps a planet moving in a forward direction. When the force of gravity balances a planet's inertia the result is circular motion. A planet needs to be moving at just the right speed to stay in orbital motion around the sun. Inertia and gravity combine to keep Earth in orbit around the sun and the moon in orbit around the Earth. A combination of gravity and inertia keeps the moon in orbit around the Earth. If there were no gravity, inertia would cause the moon to travel in a straight line. If not for Earth's gravity, inertia would cause the moon to move off through space in a straight line. In the same way, Earth revolves around the sun because the sun's gravity pulls on it while Earth's inertia keeps it moving ahead. 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. A spacecraft in orbit is not beyond the reach of Earth's gravity. In fact, gravity is what holds it in orbit without gravity; the spacecraft would fly off in a straight path. As the spacecraft orbits, it is actually falling, though it never reaches the ground. Even when satellites are thousands of miles away, Earth's gravity still tugs on them. Gravity combined with the satellite's momentum from its launch into space cause the satellite to go into orbit above Earth, instead of falling back down to the ground.
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