q.1. everybody in the universe attracts every other body with a force that is proportional to the product of the masses and inversely proportional to the square of the distance between them.here distance is the distance b/w the centre na ?
q.2. the distance b/w the earth and moon is 384400 km,it also means the distance b/w the centre of the earth to the center of the moon is 384400 km .
Hi,
(1) Yes, here the distance is between the centre of two bodies. According to newton's law of gravitational every body in this universe attract every other body in the universe. The direction of this attractive force is along the line joining the centre of two objects. The magnitude of the force is proportional to the product of the gravitational masses of the objects, and inversely proportional to the square of the distance between the centre of two bodies.
(2) It cannot be said the distance between the centre of earth and moon is 384400 km since figure is not given. But, if you are calculating the gravitational force, then it must be distance between the centre of earth and moon.
(1) Yes, here the distance is between the centre of two bodies. According to newton's law of gravitational every body in this universe attract every other body in the universe. The direction of this attractive force is along the line joining the centre of two objects. The magnitude of the force is proportional to the product of the gravitational masses of the objects, and inversely proportional to the square of the distance between the centre of two bodies.
(2) It cannot be said the distance between the centre of earth and moon is 384400 km since figure is not given. But, if you are calculating the gravitational force, then it must be distance between the centre of earth and moon.