A small wad of dough with a mass m is moving to the right at speed vi, as show in figure (a) below, when it strikes the edge of a thin rod.
The rod, which has a mass M and length d, is initially at rest and is free to pivot around a mostly frictionless axle through its center and perpendicular to the page at point O. The dough projectile sticks to the rod and the rod begins to rotate at an angular speed ω, as shown in figure (b).
(a)We wish to find the angular momentum and fractional change in kinetic energy after the collision. What is the appropriate analysis model to use in order to do this?
isolated system non-isolated system
(For the following, use the following as necessary: m, vi, M, and d.)