 #1
 1,380
 22
Homework Statement
2 crosswise cosine waves of amplitude 2.5 cm and wavelength 5 cm are travelling in opposite directions in a wire with velocity 6 mm/s. draw graphs of the wire at times t=0, 2 and 4 sec.
Homework Equations
Waves propagating to the right: ##y=A\cos 2\pi \left( \frac{x}{\lambda}\frac{t}{T} \right)##
Waves propagating to the left: ##y=A\cos 2\pi \left( \frac{x}{\lambda}+\frac{t}{T} \right)##
The Attempt at a Solution
Isn't it necessary to give the initial conditions at t=0? i mean what was the starting angle of each wave, or is it obvious that they both started with ##\theta=0## but in opposite directions, like in the drawing?
Attachments

15.3 KB Views: 332