1. The problem statement, all variables and given/known data A 2.0 m long string vibrates at its second harmonic frequency with a maximum amplitude of 2.0cm. One end of the string is at x = 0cm. Find the oscillation amplitude at x = 10,20,30,40, and 50cm. 2. Relevant equations A(x) = 2asin(kx) k= 2pi/wavelength 3. The attempt at a solution I tried plugging the numbers into the equatio, but couldn't get the right answer. Can someone get me on the right track?