Changing Mass

[](https://postimg.cc/PND14hnh) In the above pulley-mass system the mass m constantly decreases with a rate of \(0.01gs ^{−1}\) If initially both the masses \(m,M\) were equal to \(1\) Kg, then find the distance travelled by the mass M in meters in \(30s\) assuming that the mass \(m\) didn't reached the top end in those \(30s\) and acceleration due to gravity of earth \(\approx 10ms ^{−2}\)