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A particle of mass 10g is kept on the su...

A particle of mass 10g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between them, to take the particle far away from the sphere (you may take `G=6.67xx10^(-11)Nm^(2)//kg^(2))`

A

`6.67xx10^(-9) J`

B

`6.67xx10^(-10) J`

C

`13.34xx10^(-10) J`

D

`3.33xx10^(-10) J`

Text Solution

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The correct Answer is:
B
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The centres of two identical spheres are 50 cm apart. If the gravitational force between the spheres be 4.0 N , find the mass of each sphere. Given, G = 6.67 xx 10^(-11) Nm^(2)kg^(-2) .

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