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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 10 - Gravitation > The masses and radii of earth and moon are M1​, R1​ and M2​, R2​ respectively. Their centres are at a distance d apart. The minimum speed with which a particle of mass m should be projected from a point midway between the two centres so as to escape to infinity is:

The masses and radii of earth and moon are M1​, R1​ and M2​, R2​ respectively. Their centres are at a distance d apart. The minimum speed with which a particle of mass m should be projected from a point midway between the two centres so as to escape to infinity is:

If the radius of the earth decreases by 10% R1​ and M2​ the mass remaining unchanged The masses and radii of earth and moon are M1​ what will happen to the acceleration due to gravity?