A particle of mass 10 {\g} 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=6.67 × 10^{-11} {\Nm}^2 \/ {\kg}^2 )

Question

A particle of mass 10  {\g} 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=6.67 × 10^{-11}  {\Nm}^2 \/  {\kg}^2 )

Examsnet · Accepted Answer

Correct Answer is : 6.67×10−10J

AIEEE 2005 Physics Solved Paper