- #1
Combine
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Homework Statement
what is the magnitude of Gravitational force
for the following picture(s)
(attached to forum)
Homework Equations
Fg = G M*M/D^2
The Attempt at a Solution
I tried to do some of them I know the equation for the second one is fG = 2G M*M/D^2
and for the third one it's Fg = 6G M*M/D^2
But I have no idea where the 2 came from for the second one and the 6 from the third one!