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Physics
Physics
Problem
Which one of the following expressions gives the gravitational force between two point masses
m
1
m_1
m
1
and
m
2
m_2
m
2
separated by a distance
r
r
r
? a)
F
=
G
m
1
m
2
4
r
2
F = \dfrac{G m_1 m_2}{4 r^{2}}
F
=
4
r
2
G
m
1
m
2
b)
F
=
G
(
m
1
+
m
2
)
2
r
2
F = G\dfrac{(m_1 + m_2)^2}{r^{2}}
F
=
G
r
2
(
m
1
+
m
2
)
2
c)
F
=
G
m
1
m
2
r
2
F = G\dfrac{m_1 m_2}{r^{2}}
F
=
G
r
2
m
1
m
2
d)
F
=
G
m
1
2
+
m
2
2
r
2
F = G\dfrac{m_1^{2} + m_2^{2}}{r^{2}}
F
=
G
r
2
m
1
2
+
m
2
2
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