1. May 11, 2008 #1

   tweety_2479

   

   Simple Question About Pendulum I Can't Do !!
   
   The motion of the bob of a pendulum is described by
   
   theta = 3cos(3t) - sqrt3 sin(3t)
   
   where theta is the angle of the bob from the vertical. What is the amplitude of this motion??
   
   as an attempt, as i know what the answer is, but just dont know how to get to it i substituted the answer for theta and tried to find what t was
   but it didnt help i dont really no where to start for this probelm
   
   thanks if youcould help

    

   tweety_2479, May 11, 2008
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3. May 11, 2008 #2

   Hootenanny

   

   Staff Emeritus

   Science Advisor

   Gold Member

   HINT: How do you find the maximum of a function?

    

   Hootenanny, May 11, 2008

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