A particle of mass m is thrown upwards f...

A particle of mass m is thrown upwards from the surface of the earth with a velocity u the mass and the radius of the earth are respectively M and R .G is gravitational constant and g is acceleration due to gravity on the surface of the earth the minimum value of u so that the particle does not return back to earth is

`(sqrt(2GM)/(R)`

`(sqrt(2GM)/(R^2)`

`(sqrt(2GR^2))`

`(sqrt(R^2)/(2GM))`

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