If the distance between two masses is tripled, the gravitational force between changes by a factor of:
a. 1/9
b. 1/3
c. 3
d. 9

option A

Explanation:

given,

distance between two masses is doubled

new distance, r' = 3 r

using gravitational force equation

............(1)

new gravitational force

now from the given condition

now, from equation (1)

now, the change in gravitational force factor is equal to

Hence, the correct answer is option A

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a straight line sloped