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