Newton's law of gravitation says that the intensity of the gravitational force between two objects with masses M is given by the following expression:
|F| = mMG / r²
R is the distance between objects and G is the gravitational constant (This is an example of an inverse square root law.) Let us suppose that an object with mass M is located at the origin of a vector field in R³. can be the mass of the earth and the origin would be at its center.) A position vector of the object acts towards the origin and the vector field in which the unit vector acts in its direction will be given by the equation F(x,y,z) = x²yz + xy²z + xyz².
Find the div F, which represents the speed and direction of this gravitational field.
Should I start with the speed of the gravitational field? Can someone help me? I have difficult to understand questions with text. But I'm searching and trying.