1. The problem statement, all variables and given/known data You have a ukulele and you change the strings tension so that it becomes tighter. First the frequency was 431 Hz and after we tightened the string the frequency. how much bigger does the force have t be to get that frequency? 2. Relevant equations PA*V^2 = F (P = density, A = area) V=f*lambda 3. The attempt at a solution F2 = PA V2=PAf22 * lambda2 F1 = PA V2=PAf12 * lambda2 Then i divided F2 by F1 and I got: f22/f12 which equals to 1,06. My answer is 6 precent bigger. So my questions are: can I assume that lambda is going to remain the same? Is my solution correct?