Mass of a planet is $5 \times 10^{24}$ kg and radius is $6.1 \times 10^6$m. The energy needed to send a $2$ kg body into space from its surface, would be.

Energy required to send a body into the space from the surface of planet is equal to the negative of potential energy at surface.

At surface $P.E = -\dfrac{GMm}{R}$

Thus energy required $E= \dfrac{GMm}{R}$

Given: $M= 5 \times 10^{24} kg;\; m= 2 kg;\; R= 6.1 \times 10^6 m ;\;G= 6.67 \times 10^{-11} Nm^2/kg^2$

$\implies E=1.1 \times 10^{8} Joule$