The escape velocity from the earth is about $11$ km/second. The escape velocity from a planet having twice the radius and the same mean density as the earth, is ......... $km/sec$
The escape velocity from the earth is about $11$ km/second. The escape velocity from a planet having twice the radius and the same mean density as the earth, is ......... $km/sec$
$22$
$11$
$5.5$
$15.5$
The escape velocity from the earth is about $11$ km/second. The escape velocity from a planet having twice the radius and the same mean density as the earth, is ......... $km/sec$
${v_e} = \sqrt {\frac{{2GM}}{R}} = R\sqrt {\frac{8}{3}\pi G\rho } $
${v_e} \propto R$ if $\rho$= constant
Since the planet having double radius in comparison to earth therefore the escape velocity becomes twice i.e. $22 \,km/s.$
Other Language