# What force affects the motion of the planets in the solar system?

## What force affects the motion of the planets in the solar system?

Gravity is the primary force that controls the orbit of the planets around the sun. While each planet has its own gravity based on the size of the planet and the speed at which it travels, orbit is based on the gravity of the sun.

## What is the force that keeps a planet moving in orbit?

force of gravity
Each planet is held in its orbit by its gravitational attraction to the Sun, a force that acts along the vector from the Sun to the planet. Thus, the force of gravity cannot change the angular momentum of any planet with respect to the Sun.

What force keeps the planets in the solar system in orbit around the Sun?

gravitational pull
The sun’s gravity pulls the planet toward the sun, which changes the straight line of direction into a curve. This keeps the planet moving in an orbit around the sun. Because of the sun’s gravitational pull, all the planets in our solar system orbit around it.

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What force controls the movement of the planets around the sun holds together stars grouped in galaxies and galaxies grouped in clusters?

gravity
Though gravity holds planets, stars, solar systems and even galaxies together, it turns out to be the weakest of the fundamental forces, especially at the molecular and atomic scales.

### How does the force of gravity determine the motion of planets and satellites?

The force of gravity acts upon a high speed satellite to deviate its trajectory from a straight-line inertial path. Indeed, a satellite is accelerating towards the Earth due to the force of gravity. Finally, a satellite does fall towards the Earth; only it never falls into the Earth.

### What are the two factors that keep planets in 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.

Who set the planets in motion?

In the early 17th century, German astronomer Johannes Kepler postulated three laws of planetary motion. His laws were based on the work of his forebears—in particular, Nicolaus Copernicus and Tycho Brahe. Copernicus had put forth the theory that the planets travel in a circular path around the Sun.

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What type of force holds between two celestial bodies like the sun and earth?

Similar to the Earth, the sun, Moon and, for that matter, every celestial body exerts a force of gravity corresponding to its size.

## What is the force that holds galaxies together?

Most galaxies are not alone in the vast expanse of space, but are connected to one or more other galaxies by gravity. The same force that holds you onto the Earth can keep many individual galaxies bound together.

## Which force governs the motion of the Moon around the Earth explain it?

There is gravity in space Any two masses are attracted towards each other by gravity. This force of gravity causes the Moon to change direction to make it orbit around the Earth.

What is the force of gravity on the rocket at the planets surface?

The gravitational field strength at the surface of any planet is numerically equal (approximately 9.8) to the acceleration of free fall at that location, but the units of gravitational field strength are N/kg, while the units of the acceleration of free fall are m/s2.

What two forces keep an object in orbit?

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.

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### What are the three forces that act on the Solar System?

Gravitational Force, Centripetal Force & Orbits. The Sun, Earth, moon and all other objects in the solar system attract each other with a force called gravity. This gravitational force only attracts and never repels and can act over an infinite distance.

### Which object exerts the greatest gravitational force in the Solar System?

The sun with it dominant mass exerts the greatest gravitational force in the solar system and holds all the other objects in orbit and governs their motion. The source for the centripetal force in the solar system is the gravitational force of the sun.

What is the source for the centripetal force in the Solar System?

The source for the centripetal force in the solar system is the gravitational force of the sun. Without the centripetal force from the sun the planets would travel in a straight line. The velocity of the planets is high enough so that they continuously accelerate towards the sun without ever leaving their orbits.

How do the planets in the Solar System attract each other?

The Sun, Earth, moon and all other objects in the solar system attract each other with a force called gravity. This gravitational force only attracts and never repels and can act over an infinite distance.