Gravitational force is a fundamental force of nature that describes the attraction between two objects with mass. It is responsible for keeping two bodies from colliding, as well as the motion of planets around the sun and other celestial bodies in the universe.
Gravitational force is described by Newton's Law of Universal Gravitation, which states that the force of attraction between two objects is directly proportional to their masses and inversely proportional to the square of the distance between them. In other words, the greater the mass of an object and the closer it is to another object, the stronger the gravitational force between them will be.
The centripetal force of an object's orbit around another object is what keeps two bodies from colliding due to gravitational force. This force acts perpendicular to the object's velocity and constantly changes its direction, causing it to orbit around the other object instead of colliding with it.
According to Newton's Law of Universal Gravitation, the strength of gravitational force decreases as the distance between two objects increases. This is because the force is inversely proportional to the square of the distance between the objects, meaning that as distance increases, the force decreases exponentially.
No, gravitational force cannot be blocked or canceled. It is a fundamental force of nature that acts between all objects with mass. However, the effects of gravitational force can be counteracted by other forces, such as the centrifugal force of an object's motion or the force of an object's surface pushing against another object's surface.