Question -
Answer -
Mass of the spaceship, ms = 1000 kg
Mass of the Sun, M = 2 × 1030 kg
Mass of Mars, mm = 6.4 × 10 23 kg
Orbital radius of Mars, R =2.28 × 108 kg =2.28 × 1011m
Radius of Mars, r = 3395 km= 3.395 × 106 m
Universal gravitational constant, G = 6.67 ×10–11 m2kg–2
Potentialenergy of the spaceship due to the gravitational attraction of the Sun 
Potential energy of thespaceship due to the gravitational attraction of Mars
Since the spaceship isstationed on Mars, its velocity and hence, its kinetic energy will be zero.
Totalenergy of the spaceship 
The negative signindicates that the system is in bound state.
Energy required forlaunching the spaceship out of the solar system
= – (Total energy of thespaceship)
