explain acceleration due to gravity. what is escape velocity? obtain it's expression.
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Earth applies a force on every object which result in the acceleration of an object which is called a acceleration due to gravity ......
The minimum initial velocity needed to an object to overcome the gravitational pull of earth and move outside the earth is called as Escape Velocity .
Vesc= √2GM/r
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The acceleration which is gained by an object because of the gravitational force is called its acceleration due to gravity. Its SI unit is m/s2 . Acceleration due to gravity is a vector, which means it has both a magnitude and a direction.
The lowest velocity which a body must have in order to escape the gravitational attraction of a particular planet or other object is called escape velocity.
Vesc = root2GM/r
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