raskusjõudu

Raskusjõud, commonly referred to as gravity, is a fundamental force of nature that attracts any two objects with mass. It is the force responsible for keeping planets in orbit around stars, holding galaxies together, and causing objects to fall to the ground when dropped. The strength of raskusjõud between two objects depends on their masses and the distance between them. The more massive the objects, the stronger the gravitational attraction. Conversely, the farther apart the objects are, the weaker the force becomes. This relationship is described by Newton's law of universal gravitation.

On Earth, raskusjõud is what gives objects their weight. The Earth's large mass exerts a significant gravitational pull on everything on its surface and in its atmosphere. This force not only keeps us grounded but also influences phenomena like tides, which are caused by the gravitational pull of the Moon and the Sun. While often perceived as a constant on Earth's surface, the exact strength of raskusjõud can vary slightly depending on altitude and local geological variations in density. Einstein's theory of general relativity offers a more sophisticated understanding, describing raskusjõud not as a force but as a curvature of spacetime caused by mass and energy.