The condition for a uniform spherical mass `m` of a radius `r` to be a black hole is [`G` =gravitational constant and `g`=acceleration due to gravity]

The condition for a uniform spherical mass m of radius r to be a black hole is ..... (G = gravitational constant and g = acceleration due to gravity)

Gravitational acceleration g OR Acceleration due to gravity.

Define write the laws: Gravitional acceleration (g)OR Acceleration due to gravity

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 g is acceleration due to gravity on the surface of earth. The minimum value of u so that the particle does not return back to earth is

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 g is acceleration due to gravity on the surface of earth. The minimum value of u so that the particle does not return back to earth is

A black hole is a body from whose surface nothing may ever escape. What is the condition for a uniform spherical mass M to be a black hole? What should be the radius of such a black hole if its mass is the same as that of the Earth?

If G is universal gravitational constant and g is acceleration due to gravity then the unit of the quantity G/g is