An artificial satellite is moving in a circular orbit of radius nearly $42.250 \,km .$ Calculate its linear velocity, if it takes $24$ hour to revolve round the earth.
An artificial satellite is moving in a circular orbit of radius nearly $42.250 \,km .$ Calculate its linear velocity, if it takes $24$ hour to revolve round the earth.
Given $r=42.250 km , T =24$ hours $=86400 s$
The linear velocity is given by the expression
$v=\frac{2 \pi r}{ T }=\frac{2 \times 3.14 \times 42250}{86400}=3.07 \approx 3.1 km s ^{-1}$
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