16.3 The Speed of a WaveLet’s look at a transverse wave propagating toward a wall:The speed of the wave will depend on how fast the segment of string at point 1 can pull up on the segment of string at i t 2point 2.By Newton’s 2ndLaw, F = ma, so a greater force means a greater acceleration, d thftiand thus a faster moving wave.But what is the force in this case for the wave on a string???It’s the tensionin the string!Thus, the greater the tension in the string, the faster waves will move on the string.But, the acceleration of each mass segment of string, also depends on the mass of the string. The lighter each mass segment of string, the greater the acceleration, and thus speed.For a continuous medium, like a string, rope, wire or cable, we can use Mass Density.
has intentionally blurred sections.
Sign up to view the full version.