# Motion with changing mass

by athrun200
Tags: mass, motion
 P: 277 1. The problem statement, all variables and given/known data http://www.physicsforums.com/attachm...1&d=1318764025 2. Relevant equations F=m$\frac{dv}{dt}$-v$\frac{dm}{dt}$ 3. The attempt at a solution It seems part b is trivial. Obviously, the propellsion force is constant. To find F, just subs m=m/2 I am not sure wheather I am right. http://www.physicsforums.com/attachm...1&d=1318764025 Attached Thumbnails