# [Q] - Wave moving along a string

1. Mar 23, 2009

### Sheen91

1. The problem statement, all variables and given/known data

y(x,t) = (6.0 mm) sin(kx + (600rads/s)t + phi)

That is the description of a wave moving along a string.

How much time does any given point on the string take to move between y = 2 mm and y = -2 mm?

http://img14.imageshack.us/img14/9176/question1y.jpg [Broken]

2. Relevant equations

I don't know any I am sorry.

But, I know :

Angular Frequency = 600rads/s

Amplitude = 6mm

3. The attempt at a solution

I don't know any formula with t(time) in it.

If anyone could help that would be great

Cheers

Last edited by a moderator: May 4, 2017
2. Mar 23, 2009

### Dr.D

You say, "I don't know any formula with t(time) in it."

What about the given expression for y(x,t), doesn't that have a t in it?

3. Mar 23, 2009

### Sheen91

Yes, but can you show me some working, I don't get it >.<

Thanks

4. Mar 23, 2009

### Dr.D

".... show you some working." I don't get it as to what you mean.

5. Mar 23, 2009

### Sheen91

I don't understand the wave equation.

Can you partially solve the problem so that I am able to follow you and see if I am able to solve the problem and understand what you have done.

A little explanation along with your working, the partially solved problem, would be great.

Cheers