Question

define the critical velocity an explain it​

Answer 1

Answer:

Explanation:

Critical velocity is defined as the speed at which a falling object reaches when both gravity and air resistance are equalised on the object.

The other way of defining critical velocity is the speed and direction at which the fluid can flow through a conduit without becoming turbulent. Turbulent flow is defined as the irregular flow of the fluid with continuous change in magnitude and direction. It is the opposite of laminar flow which is defined as the flow of fluid in parallel layers without disruptions of the layers.

Answer 2

The minimum velocity needed by an body (satellite) to revolve around the earth is called as critical velocity.

Explanaion -

When a object is near earth it falls on earth this will also act on a satellite and it will fall on the surface therefore to make satellite at a stable position in space it a given a circular velocity these velocity is called as critical velocity.

How it acts -

When a satellite revolves around earth it produces centrifugal force these force counteract the earths gravitational force and hence satellite becomes able to revolve around earth without falling on Earth's surface.

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