1. The problem statement, all variables and given/known data A uniform string of length 0.5 m. is fixed at one end and free at the other end. Find the wavelength of the fundamental mode of vibration. 2. Relevant equations λ = (2L) / mode 3. The attempt at a solution λ = (2(0.5 m.)) / 1 λ = 1 m. But the solution says it's 2 m. because λ = 4*L. Why is it 4L when the formula is 2L?