Orbits are the result of a perfect balance between the forward motion of a body in space, such as a planet or moon, and the pull of gravity on it from another body in space , such as a large planet or star. ... These forces of inertia and gravity have to be perfectly balanced for an orbit to happen.
What two factors affect orbital motion?
Orbital Motion:
Newton concluded that two factors— inertia and gravity – combine to keep Earth in orbit around the sun, and the moon in orbit around Earth.
What are the factors affecting the orbit of Earth’s satellites?
Gravity keeps people on the Earth’s surface. Gravity keeps the International Space Station in orbit around the Earth. Gravity keeps the Moon orbiting around the Earth. Gravity keeps the Earth orbiting around the Sun.
What planet has 16 hours in a day?
| Planet Day Length | Jupiter 10 hours | Saturn 11 hours | Uranus 17 hours | Neptune 16 hours |
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What factors affect orbit?
- Gravity. Gravity is the primary force that controls the orbit of the planets around the sun. ...
- Inertia. ...
- Gravity Working with Inertia. ...
- Velocity and Gravity.
What keeps a planet in orbit?
Gravity is the force that keeps planets in orbit around the Sun. Gravity alone holds us to Earth’s surface. ... A planet’s size and mass determines its gravitational pull. A planet’s mass and size determines how strong its gravitational pull is.
How does a satellite remain in orbit?
So really, a satellites ability to maintain its orbit comes down to a balance between two factors: its velocity (or the speed at which it would travel in a straight line), and the gravitational pull between the satellite and the planet it orbits . The higher the orbit, the less velocity is required.
Why does the speed of a satellite not change?
6. The speed of a satellite in circular orbit around a planet does not depend on the mass of the satellite . ... The mass of the planet is what creates this gravitational field, and it doesn’t cancel out. The mass of the satellite does cancel out because it shows up both in the gravitational force and in the inertia (ma).
Which planet will travel the fastest?
Answer: Mercury is the winner at an orbital speed of about 47.87 km/s (107,082 miles per hour), which is a period of about 87.97 Earth days.
What force keeps a satellite in orbit?
Gravity provides the force needed to maintain stable orbit of planets around a star and also of moons and artificial satellites around a planet.
What forces are acting on a satellite?
The fundamental principle to be understood concerning satellites is that a satellite is a projectile. That is to say, a satellite is an object upon which the only force is gravity . Once launched into orbit, the only force governing the motion of a satellite is the force of gravity.
Why do the orbits of satellites eventually degrade?
Atmospheric drag at orbital altitude is caused by frequent collisions of gas molecules with the satellite . It is the major cause of orbital decay for satellites in low Earth orbit. It results in the reduction in the altitude of a satellite’s orbit.
How much time on Earth is 1 hour in space?
How is 1 hour in space equal to 7 years on Earth.
How long is 1 day in space?
| Planet Length of Day | Pluto 6.4 Earth days |
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How is 1 hour in space equal to 7 years on Earth?
The first planet they land on is close to a supermassive black hole, dubbed Gargantuan, whose gravitational pull causes massive waves on the planet that toss their spacecraft about. Its proximity to the black hole also causes an extreme time dilation , where one hour on the distant planet equals 7 years on Earth.
What is known as a dirty snowball?
Comets are several miles in diameter, composed of rock, ice and other organic compounds, making them “dirty snowballs” in space, according to NASA’s near earth object program. They originate outside the orbit of the outermost planets and form elliptical orbits that pass close to the sun.
