The weight of an object is 10N when it is at a distance of 6.4 x 10'm from the center of the earth. What will be its weight if it is taken to a distance of 1.28 x 10'm

Explanation:

At the center its weight is zero. Or you can argue by symmetry: if the weight is not zero, in what direction would it act?

answer; gravity pulls glaciers down hill and as glaciers flow it pick up rocks and soil;