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A planet has mass, M, and radius R, If the universal grav...

A planet has mass, M, and radius R, If the universal gravitational constant is G, what is the expression for the escape velocity of an object on the planet?

A.

GR2

B.

2GMR

C.

2GR

D.

GMR

Correct answer is B

The expression for the escape velocity ve of an object from a planet of mass M and radius R using the universal gravitational constant G is:


ve=2GMR