(A) 4 J
(B) 16 J
20 J
06²
ID
36 J
you doubled both the radius of the earth and its mass, the force of gravity at the earth's (new) surface would
(E) 40 J
(A) be 1/4 of what it now is.
(C) be the same.
(B) be 1/2 of what it now is.
[D] be 2 times what it now is.
lebe 4 times what it now is.