Earth’s mass is and its radius is

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

Earth’s mass is

6.0\times10^{24}\,\text{kg}

and its radius is

6.4\times10^{6}\,\text{m}

. Calculate the escape velocity from the surface of a hypothetical planet that has the same radius as Earth but twice its mass. Take

G = 6.67\times10^{-11}\,\text{N\,m}^2\!/\!\text{kg}^2

. (a)

1.1\times10^{4}\,\text{m/s}

(b)

2.2\times10^{4}\,\text{m/s}

(c)

1.6\times10^{4}\,\text{m/s}

(d)

7.9\times10^{3}\,\text{m/s}