Q: 8.24 A spaceship is stationed on Mars. How much energy must be expended on the spaceship to launch it out of the solar system? Mass of the space ship ; mass of the sun ; mass of mars ; radius of mars;radius of the orbit of mars ;
Firstly, the potential energy of spaceship due to the sun is given by :
and the potential energy of spaceship due to mars is given by :
It is given that the spaceship is stationary so its kinetic energy is zero.
Thus the total energy of spaceship is :
Thus the energy needed to launch the spaceship is :