Explain the relationship between the mass and the weight of an object. Is the mass of an object the same on earth and the moon? Are the weights the same on earth and the moon?

The separation distance between two 1.0 kg masses is changed. How is the mutual gravitational force affected in each case? (Assume F2 represents the new force and F1 represents the original force.) (a) The separation distance is two-fifths the original distance.F2 / F1 =  (b) The separation distance is 8 times the original distance.F2 / F1 =

An object's weight is W0 on the earth. a)What would be its weight if the earth had twice its present mass, but was the same size? b)What would be its weight if the earth had half its present radius, but the same mass? c)What would be its weight if the earth had half its present radius and half its present mass? d)What would be its weight if the earth had twice its present radius and twice its present mass?

A planet was discovered which is twice as massive as Earth and has twice Earth's radius. How does the value of the gravitational field strength on the surface of that planet compare to the value of the gravitational field strength on the surface of Earth (gEarth)?   1/2gEarth 1/8gEarth gEarth 1/4gEarth 2gEarth 4 g Earth