Answer:
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 m/R
Potential
energy of space-ship due to gravitational attraction of Mars = - GM' m/R'
Since,
the K.E. of space ship is zero, therefore,
total
energy of space ship
Energy
required to rocket out the space ship from the solar system = - (total energy
of space ship)
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