Question

what is greater, the attraction of the earth for 1 kg of aluminium or attraction of 1kg of copper for earth? why?

Answer 1

Hello !
The Gravitational force depends upon the mass of the Earth and object.
Here , the masses of both Aluminium and Copper are equal so Earth will exert equal force of attraction on both of them if only if they both are at same distance from the earth surface , as Attraction force is always inversely proportional to the square of distance between the bodies.
Gravitational Force = M1*m2/r² * G
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