With a 3-fold increase in the radius of the circular orbit of an artificial Earth
satellite, the period of its rotation increases by 6 times. How many times will
the satellite's orbital speed change?
as we know ,
in circular orbit ,the relation between T,R,V is:
as given radius increased 3 times and time period by 6 times.
we get:
therefore speed will reduced to half the original.
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