Derive an expression for the escape velocity of an object from the surface of earth. What is its value on the earth's surface ?

Define escape velocity.Deduce anexpression for the escape velocity and time period of a body that moves in a circular orbit near the earth's surface.

Derive an expression for Gravitational potential above the surface of the earth.

The ratio of the mass of the moon to that of the earth is 1:81. If the radius of the moon is assumed to be one-fourth of that of the earth , then what is the acceleration due to gravity on the surface of the moon in terms of that on the earth's surface ? Hence, find the escape velocity from the surface of the moon in terms of that from the earth's surface.

An artificial satellite is moving in an orbit around the earth with a velocity equal to one-third the escape velocity from the surface of the earth. (i) Find the height of the satellite from the surface of the earth.

From the surface of the moon, give the value of the escape velocity .

Where is the escape velocity of a body greater -from the earth or from the moon ?

What is the ratio of the escape velocity to the orbital velocity for a satellite revolving near the earth's surface?

Derive an expression for acceleration due to gravity at a depth d from earth's surface . Is it increases or decreases.

Define escape velocity. Derive an expression for escape velocity.