If Earth were twice as far from the sun, the force of gravity attracting the Earth to the Sun would be



a. twice as strong

b. half as strong

c. one-quarter as strong.

Respuesta :

AL2006
The strength of the gravitational forces between two objects is
inversely proportional to the SQUARE of the distance between them.

So when the distance changes from ' D ' to ' 2D ', the strength of the
gravitational forces changes from  ' F ' to

                   (1/2)² F  =  1/4 F .