- #1

- 20

- 0

## Homework Statement

A wave on a string has a wave function with the form of:

y(x,t)=0.02sin(6.35x+2.63t)

Find the shortest time for the displacement of the string at any point on the chain changes from 0.01m to -0.02m.

## The Attempt at a Solution

The answer said we can set x=0.

And 0.01=0.02sin(2.63t1), 3*3.14/2=2.63t2, where t1 is initial time and t2 is final time.

then t1=0.2s and t2=1.6s, so t2-t1=1.4s

But I don't understand where 3*3.14/2=2.63t2 comes from.

And when I tried to follow the answer and calculate, the calculated answers don't seem to be correct....

So how should I solve it?

Thank you very much.