The escape velocity from the earth is . The escape velocity from a planet having twice the radius and the same mean density is |

The escape velocity from the earth is . The escape velocity from a planet having twice the radius and the same mean density is |

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Escape velocity from the earth Let the mass, radius and density of earth be respectively and for given planet mass, radius and density are respectively. Escape velocity from the earth Similarly, escape velocity from the given planet Dividing Eq. (i) by Eq. (ii) we get |