Question:
The equation of a standing wave, produced on a string fixed at both ends, is $\left.\mathrm{y}=(0.4 \mathrm{~cm}) \sin \left[\left(0.314 \mathrm{~cm}^{-1}\right) \mathrm{x}\right] \cos \left[600^{\pi \mathrm{s}^{-1}}\right) \mathrm{t}\right]$ What could be the smallest length of the string?
Solution:
