Finally calculate the wave speed. V f times lambda where. When the taut string is at rest at the equilibrium position the tension in the string is constant.
When wavelength is measured in metres 1 l represents the number of waves of the wave train to be found in a length of one metre or if measured in centimetres the number in one centimetre.
Physics is really nothing more than a search for ultimate simplicity but so far all we have is a kind of elegant messiness Physics is indeed the most fundamental of the sciences that tries to describe the whole nature with thousands of mathematical formulas. This number is called the wave number of the spectrum line. To see how the speed of a wave on a string depends on the tension and the linear density consider a pulse sent down a taut string Figure. What is its frequency.