Posted by vv on Tuesday, September 17, 2013 at 7:01am.
Two balls, one of gold with a mass of 100 kg and one of wood with a mass of 1 kg, are suspended 1 meter apart. What is the attractive force, in newtons, of
a. the gold ball acting on the wooden ball?
b. the wooden ball acting on the gold ball?

Physics  bobpursley, Tuesday, September 17, 2013 at 10:41am
a,b both forces are equal and opposite.
a. force=GMm/distance^2

Physics  vv, Tuesday, September 17, 2013 at 11:42am
I solve it, but i don't know the sign of each one of them .. can you help me in this part please ..
F = (G.m1.m2) / (r2)
F = (6.673 x 1011 x 100 x 1) / (12)
F = 6.673 x 109 N
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