Classical Dynamics of Particles and Systems · Problem 9-62
Motion in a Noninertial Reference Frame — Marion & Thornton
Physics — Mechanics · rocket-motion
Problem
To perform a rescue, a lunar landing craft needs to hover just above the surface of the moon, which has a gravitational acceleration of g/6. The exhaust velocity is 2000 m/s, but fuel amounting to only 20 percent of the total mass may be used. How long can the landing craft hover?