Two identical strings are sounding the same fundamental tone of frequency 156 Hz. Each string is under 228 N of tension. The peg holding one string suddenly slips, reducing its tension slightly, and the two tones now create a beat frequency of three beats per second. What is the new tension in the string that slipped? My attempt so far: fbeat = f1 - f2 = 3Hz f1 = 156Hz 3Hz - 156Hz = -f2 f2 = 153Hz So how do I find the tension for this frequency? Usually there is more information given such as the linear density or speed of the wave. I dont see how I can find the tension without those variables. Any help?