The angular momentum of the original spinning cloud of gas/dust that formed the solar system.mreq said:And what give them the speed (motion)?
mreq said:And why it doesn't stop ?
Angular momentum is a measure of an object's rotational motion. It is calculated by multiplying an object's moment of inertia by its angular velocity. In simpler terms, it is the tendency of an object to keep spinning.
The angular momentum of a planet is responsible for its orbital motion. The planet's momentum keeps it moving in a circular or elliptical path around its parent star, while still maintaining a constant distance from the star.
The angular momentum of a planet is affected by its mass, the distance from its parent star, and its rotational speed. The larger the planet's mass and the faster it rotates, the greater its angular momentum will be.
Yes, angular momentum can change over time. This can happen if external forces, such as gravitational interactions with other planets or celestial bodies, act on the planet. However, in most cases, the total angular momentum of a planet and its parent star remains constant.
The principle of conservation of angular momentum helps explain the formation of the solar system. As a large cloud of gas and dust collapsed under its own gravity, it began to rotate faster and faster due to conservation of angular momentum. This rotation caused the cloud to flatten out into a disk, with the majority of the mass concentrated at the center. Over time, this disk eventually formed into the planets and other objects we see in our solar system today.