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Q.

Calculate the gravitational force between a 10kg and a 20Kg ball placed at a separation of 5m.


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a

5.53 x 10-10N

b

5.53 x 10-9N

c

5.53 x 10-8N

d

5.53 x 10-11N 

answer is A.

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Detailed Solution

The universal law of gravitation is given by
F = Gm1m2R2
F = (6.67x10-11 x 10 x 20)/52
F = 5.53 x 10-10N
 
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