merchant navy | Posted on | Science-Technology

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Software engineer at HCL technologies | Posted on

**Escape velocity :**

It is the minimum velocity with which a body is must be projected vertically upwards inlrder that it may just escape the gravitational field of earth.

For example: If we throw a ball into air, it rises to a certain height and falls back. If we throw it with a greater velocity, it will never come back. This greater velocity is escape velocity.

Formula: Ve = √2GM/R

Where, M is mass of earth and R is radius of earth.

It is the velocity required to put the satellite into its orbit around the earth.

Formula: Vo= √GM/R+h

Where,

R is radius of earth

M is mass of earth

Vo is orbital velocity

h is height of satellite above earth's surface.

R+h is orbital radius of the satellite.

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