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The new force of gravitational attraction is D. 20 newtons
Explanation:
The magnitude of the gravitational force between two objects is given by :
(1)
where
is the gravitational constant
m1, m2 are the masses of the two objects
r is the distance between them
In this problem, the initial gravitational force between the two objects A and B is
F = 5 N
When the distance between them is r.
Later, the distance is reduced in half:
Substituting into eq.(1), we see how does the force change:
So, the force increases by 4 times. Therefore, the new force is
Learn more about gravitational force:
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