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.


We know that,

v = (i)


We have to calculate the speed


π= (It is a constant)


Radius, r = 42250 km


Time, t = 24 h


Putting these values in (i), we get


Speed, v =


v = 11065.4 km/h


= km s-1


= 3.07 km s-1


10
1