# Vibrating string

1. Dec 5, 2006

### huh

From what I've seen, standing waves (which are really cool looking) have nodes (no displacement) at either end. What would happen if antinodes were at the ends instead of nodes? What could you do to make this happen?
hmmm...

2. Dec 5, 2006

### Gokul43201

Staff Emeritus
Look up oscillations of an air column in an open pipe.

Last edited by a moderator: May 2, 2017
3. Dec 6, 2006

### Jheriko

I don't see how this would work with a vibrating string, since there are not enough end points... the air column is a more useful example of standing waves in that respect.

4. Dec 6, 2006

### brewnog

Obviously you couldn't really do it with strings. The open-ended air column is the best analogy, or just look at half of a string.

5. Dec 6, 2006

### Kurdt

Staff Emeritus
It can be done if you clamp something more rigid like a metal rod in the centre.

6. Dec 6, 2006

### Staff: Mentor

Tie the end of the string loosely to a transverse rod so the loop of string can slide freely along the rod.

7. Dec 6, 2006

### huh

Wow. That's cool. Thanks :)

8. Dec 6, 2006

### StatMechGuy

The equations of motion for a vibrating rod are fourth order, so it would be a bit different from a vibrating string. However, you still get to see nodes and anti-nodes.