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State with Reasons Whether the Sentence Is True Or False . A Satellite Needs a Specific Velocity to Revolve in a Specific Orbit. - Science and Technology 1

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Question

State with reasons whether the sentence is  true or false .

 A satellite needs a specific velocity to revolve in a specific orbit.

Solution

 The specific velocity with which the satellite revolves around a planet is known as critical velocity. It is given as

\[v_c = \sqrt{\frac{GM}{R + h}}\]
So, it can be observed that the critical velocity of a satellite changes depending on the height of the orbit from the surface of a planet. Thus, to revolve in a specific orbit, a satellite would require specific velocity. Hence, the statement is true.

 

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Chapter 10: Space Missions - Exercises [Page 144]

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