What is gravitational field strength??

 What is gravitational field strength?


Gravitational field strength, often denoted by 'g', is a measure of the gravitational force experienced by a unit mass at a given point in space. It represents the force per unit mass experienced by an object placed at that point. Gravitational field strength is usually expressed in units of acceleration, such as meters per second squared (m/s^2). At the surface of the Earth, the gravitational field strength is approximately 9.8 m/s^2.

Define orbital velocity 


Orbital velocity is the velocity required by an object to remain in a stable orbit around another object, such as a planet or a star. It is the velocity at which the gravitational force pulling the object inward is balanced by the centrifugal force pushing the object outward, resulting in a circular or elliptical path around the larger body. The orbital velocity depends on the mass of the larger body and the distance from its center.


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