Question

Which is greater the attraction of the earth for 1 kg of aluminum or aluminum or attraction of 1 kg of aluminum for the earth?

Answer 1

The Force applied by earth on the aluminium is same as the force applied by aluminium on earth. F=Gm×Mr2 But mass of earth is much greater than mass of aluminium , so earth moves very less distance( close to zero) but aluminium accelerates very much .