Question

For the wave $y=5sin30\pi [t-(x/240\left)\right]$ is in seconds.Find the displacement when $t=0$ and $x=2cm$.

• A. $-7.535cm$
  
• B. $-9.535cm$
  
• C. $-3.535cm$
  
• D. $-2.535cm$

Answer 1

The correct option is C $-3.535cm$

Displacement at $(x,t)$ is given as $y(x,t)=5sin30\pi [t-(x/240\left)\right]$

Thus $y(2,0)=5sin30\pi [0-(2/240\left)\right]$

$=-3.535cm$