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NCERT Textbook
MOTION

Class 9
Physics :-NCERT Solution - Motion

Page No 100:
Question 10:

An artificial satellite is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the earth?


Answer:

Radius of the circular orbit, r= 42250 km

Time taken to revolve around the earth, t= 24 h

Speed of a circular moving object, 

Hence, the speed of the artificial satellite is 3.069 km/s.


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