1. #1

    Escape velocity and time calculation of a moving rocket

    I have a doubt with M.sc entrance question that
    The maximum possible exhaust velocity of a rockate is 2km/sec calculate the mass ratio for the rocket if it has to attain the escape velocity 10km/sec .also calculate the time taken by the rocket to attain this velocity if its mass changes to 1/5th of its original mass?

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