Define critical speed of a satellite. Derive an expression for it.

Orbital speed of a satellite

Define orbital speed of a satellite.

Define orbital velocity of a satellite. Derive expressions for the orbital velocity of a satellite. Show that the escape velocity of a body from the earth's surface is sqrt2 times its velocity in a circular orbit just above the earth's surface.

Define critical angle.

Define the time period of a satellite

What do you mean by critical velocity of a liquid?Derive an expression for it on the basis of dimensional considerations.

Define orbital velocity. Derive an expression for the orbital velocity of a satellite revolving around a planet