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Physics
Physics
Problem
Two identical small spheres attract each other with a gravitational force
F
F
F
when their centres are
d
d
d
apart. What will be the force when the separation is reduced to
d
3
\dfrac{d}{3}
3
d
? a)
3
F
3F
3
F
b)
F
9
\dfrac{F}{9}
9
F
c)
9
F
9F
9
F
d)
27
F
27F
27
F
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