question_answer

Does the concentration of the earth's mass near its centre change the variation of \[\text{g}\] with height compared with a homogeneous sphere? How?

Answer:

                Any change in the distribution of the earth's mass will not affect the variation of acceleration due to gravity with height. This is because for a point outside the earth, the whole mass of the earth is 'effective? and the earth behaves as a homogeneous sphere.