If the Earth losses its gravity, then for a body

If g is the acceleration due to gravity at the earth’s surface and r is the radius of . the earth, the escape velocity for a body to escape out of earth’s gravitation field is :

Weight of a body is the force of gravitational attraction experienced by it. It is equal to the product of mass of the body and acceleration due to gravity. Obtain an expression for the acceleration due to gravity of a body in terms of the mass of the earth.

If g is the acceleration due to gravity at the earth's surface and r is the radius of the earth, the escape velocity for the body to escape out of earth's gravitational field is

At what altitude (h) above the earth's surface would the accelration due to gravity be one fourth of its value at the earth's surface ?

If the acceleration due to gravity at the surface of the earth is g, the work done is slowly lifting a body of mass in from the earth's surface to a height R equal to the radius of the earth is

Define acceleration due to gravity. Deduce an expression of the acceleration of the acceleration due to gravity at a place on the surface of the earth due to its rotating.