NEET PHYSICS- A BLOG FOR BETTER PRACTICE

                        GRAVITATION   Brief summary Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. it's far and away the weakest known force in nature and thus plays no role in determining the interior properties of everyday matter. On the opposite hand, through its long reach and universal action, it controls the trajectories of bodies within the system and elsewhere within the universe and therefore the structures and evolution of stars, galaxies, and therefore the whole cosmos. 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. At Earth’s surface the acceleration of gravity is about 9.8 metres (32 feet) per second per second. Thus, for each second an object is in free fall, its speed increases by a...