If the radius and acceleration due to gravity both are doubled, escape velocity of earth will become ......... $km/s$
If the radius and acceleration due to gravity both are doubled, escape velocity of earth will become ......... $km/s$
$11.2$
$22.4$
$5.6$
$44.8$
If the radius and acceleration due to gravity both are doubled, escape velocity of earth will become ......... $km/s$
$v = \sqrt {2gR} $. If $g$ and $R$ both are doubled then $v$ will becomes two times i.e. $2 × 11.2 = 22.4 \,km/s$
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