what is gravity ???????..
Answers
Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects.
Gravity, as Newton posited, is the force that keeps the Earth in orbit around the Sun. As you may remember from your days in school, gravity tends to be defined as: "The force by which a planet or other body draws objects toward its center.
Artificial gravity can be created using a centripetal force. A centripetal force directed towards the center of the turn is required for any object to move in a circular path. In the context of a rotating space station it is the normal force provided by the spacecraft's hull that acts as centripetal force.
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