Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Max speed perpendicular to the wave's direction

  1. Aug 25, 2010 #1
    1. The problem statement, all variables and given/known data
    This question is part of a longer problem. I know the answer, but I don't know how they got their. Please provide a detailed explanation. Thanks.

    Question: Find the maximum speed perpendicular to the wave's direction of travel (the transverse speed).


    2. Relevant equations
    The book gives a hint: find amplitude of dy/dt. Therefore, dy/dt=2cos(4x-2t)

    3. The attempt at a solution
    Period= pi
    Lambda= pi/2
    Frequency= 1/pi
  2. jcsd
  3. Aug 25, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Incorrect. You forgot to apply the chain rule of differentiation.
  4. Aug 25, 2010 #3
    here u have to take x=0 as u r considering the perpendicular velocity. So once u assume that differentiate it and then u will get the max. value
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook