A double stage rocket has an initial mass M_(1). Gas is exhausted from the rocket at a constant rate of dm/dt and with an exhaust velocity u relative to the rocket. When the mass of the rocket reaches the value 'mu' the first state of mass m is disengaged from the rocket then the rocket continues the second stage at the same rate (dm/dt) and exhaust velocity (u) as in the first stage unit it reaches a mass M_(f). If gravity is neglected and the rocket has started from rest, the velocity of the rocket at the end of first stage is

A double stage rocket has an initial mass M_(1). Gas is exhausted from

1.	A double stage rocket has an initial mass M_(1). Gas is exhausted from the rocket at a constant rate of dm/dt and with an exhaust velocity u relative to the rocket. When the mass of the rocket reaches the value 'mu' the first state of mass m is disengaged from the rocket then the rocket continues the second stage at the same rate (dm/dt) and exhaust velocity (u) as in the first stage unit it reaches a mass M_(f). If gravity is neglected and the rocket has started from rest, the velocity of the rocket at the end of first stage is
Answer» `U LIN ((m_(i))/(MU))` `u LN((M_(i) - mu)/(M_(i)))` `u ln((M_(i) + mu)/(M_(i)))` `u ln((mu)/(M_(i)))` ANSWER :A