- #1

deathkamp

- 17

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## Homework Statement

[/B]

I messed up the original thread in terms of information, so I made a new better one. Ok here goes:

I have a problem where a right circular cylinder with diameter .115meter and a mass of .03kg is rotating at 300 rev per min. Now an Ant which weighs .01kg collides with the rotating cylinder and l

**ands on the rim**of the cylinder. The Ant is treated as a

**point mass**.

So I am looking for the

**final frequency**in rev/min of the cylinder/Ant system? Which is part a of the problem?

This is the farthest I got, and I wanted to know if my work is good so far and how to use the angular momentum to get the final frequency?

## Homework Equations

I(inertia)=mr^2 this is for point mass

w=v/r I used v=300 rev/min(not sure about this)

angular momentum is L=I*w

## The Attempt at a Solution

I=(.01kg)*(.0575m^2), so I=33.06*10^-6 inertia for the point mass after it landed on the cylinder

w=300/(.0575m), w=5.21k rad/sec(this part I am not sure about)

L= (33.06*10^-6 )*(5.21k rad/sec)

#### Attachments

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