Ok, so theta is 90 for the initial and final conditions. Now r. If you consider the instant before the bullet hits and the instant after the bullet leaves could you use (1.3/4)?
Homework Statement
A uniform stick 1.3 m long with a total mass of 260 g is pivoted at its center. A 3.6 g bullet is shot through the stick midway between the pivot and one end. The bullet approaches at 250 m/s and leaves at 140 m/s. With what angular speed is the stick spinning after the...