Two balls, each of radius , equal mass and density are placed in contact, then the force of gravitation between them is proportional to |
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a) |
b) |
c) |
d) |

Two balls, each of radius , equal mass and density are placed in contact, then the force of gravitation between them is proportional to |
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a) |
b) |
c) |
d) |

1 Answer

127 votes

**(c)**

Let masses of two balls are (given) and the density be .

Distance between their centres

Thus, the magnitude of the gravitational force F that two balls separated by a distance 2R exert on each other is

127 votes

127