The rear view of a space capsule that is rotating about its longitudinal axis at 6rev/min. The occupants want to stop this rotation. They have small jets counted tangentially at a distance R=3m from the axis, as indicated, and can eject 10g/s of gas from jet with a nozzle velocity of 800m/s. For how long must they turn on these jets to stop the rotation? The moment of inertia of the ship about its axis assumed to be constant is 4000kg.m^2. They must keep turning it until it stops rotating! hehe.. I had no problem with rotation though, but I am really weak in the conservation consept, and it doesn't seem to get it. I'm not looking for the answer as much as I want to learn the concept. So if you have time please explain it to me, I would really appreciate it!