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Physics
Physics
Problem
Two point masses
m
m
m
and
2
m
2m
2
m
are placed
r
r
r
apart and attract each other with force
F
F
F
. They are replaced by two new masses
3
m
3m
3
m
and
4
m
4m
4
m
placed a distance
x
x
x
apart, yet the force remains
F
F
F
. What is the ratio
x
r
\dfrac{x}{r}
r
x
? a)
3
\sqrt{3}
3
b)
6
\sqrt{6}
6
c)
3
2
\dfrac{3}{2}
2
3
d)
6
3
\sqrt[3]{6}
3
6
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