Medium
An artificial satellite revolves around a planet for which gravitational force $(F)$ varies with distance $r$ from its centre as $F \propto r^2$. If $v_0$ is its orbital speed,then
- A$v_0 \propto r^{-1/2}$
- B$v_0 \propto r^{3/2}$
- C$v_0 \propto r^{-3/2}$
- D$v_0 \propto r$
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