A spaceship is stationed on mars. How much energy must be expended on the spaceship to launch it out of this kind are known as neutron stars. Certain steller objects called pulsars belong to this categor). Will an object placed on its equator remain stuck to its surface due to gravity? (mass of the sun`=2xx10^(30)kg`).

Explanation

Let R be the radius of orbit of Mars and R be the radius of the Mars. M be the mass of the sun and M be the mass of Mars. If m is the mass of the space-ship, then potential energy of space-ship due to gravitational attraction of the sun=-GM mR potential energy of space-ship due to gravitational attraction of Mars=-GM m/R since the K.E. of space ship is zero. therefore.