- #1

- 5

- 0

_{0}and undergoes a perfectly elastic collision with the bottom tip of a rod of length d and mass 2m. The rod is pinned through its center through a frictionless axle. And initially hangs straight down at rest. What is the cubes velocity both speed and direction after?

Im kinda lost on this one on where to start.

So i tried momentum equations

mv

_{0}=mv

_{1}+2mv

_{1}

but the answer is v

_{1}=(1/5)v

_{0}

Im guessing both objects do not receive the same speed so this would be where my equation fails...