an artificial satellite is moving in a circular orbit of radius 3450km. calculate its speed if it takes 30hours to revolve around the earth
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Distance covered by the satellite in 24 hours
s=2πr
=2×3.14×42250=265464.58 km
Therefore speed of satellite,
v= time taken
distance travelled
= 24×60×60
265464.58 =3.07 km s−1
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