- 35

- 0

**1. Homework Statement**

A dumbbell consists of two small balls attached to the ends of a 1.0m rod of negligible mass. Ball1 has a mass of 1.0kg and ball2 has a mass of 3.0kg. The dumbbell rotates about a fixed vertical axis midway between the balls, with an angular speed of 1/pi rev/s. What is the total angular momentum of the dumbbell?

**2. Homework Equations**

**3. The Attempt at a Solution**

I=mr^2

L=wI

w=2 (since the angular speed is 1/pi rev/s?)

r^2=0.25m

m=4kg

L=2 kg*m²/s

would that be right?