- #1

mstachowsky

- 10

- 0

## Homework Statement

Consider a bar of length L, mass M, and uniform density floating in free space (ie: neglect gravity and assume that it is not contacting anything). The bar is initially stationary. Imagine a bullet of mass m traveling at a speed v hits the bar at one end. What is the linear momentum of the bar, the angular momentum of the bar, and the linear momentum of the bullet after the collision?

## Homework Equations

p_bullet = mv before collision

Momenta of the bar are zero, for both angular and linear.

## The Attempt at a Solution

The best I can come up with is that in the collision, we have:

mv = p_bar + Jw_bar + mv2

Where v2 is the speed of the bullet after collision and Jw_bar is the angular momentum of the bar. The problem I'm having is I can't figure out how to find the expressions for p_bar and Jw_bar in terms of the known variables M, m, and v.