00:01
So we have a length of 0 .82 oriented in the next direction.
00:07
T is also 119 newtons and we're looking at a density of 7800 kilogram per cubic meter in the radius of 5 .1 into 10 to minus 4 meters.
00:24
Amplitude of this wave is 0 .002 meters.
00:27
Now we need to find the mass per length as part of the question.
00:34
And remember that mass per length of the string can be calculated using basically the cylinder formula because basically a string is a cylinder, a very long cylinder.
00:46
So we're looking at v over pi r squared l, where l is the length.
00:52
So the mass therefore, mass will be equal to density and volume.
00:56
We're looking at density and pi r squared l in combination.
01:02
So therefore mass per length, mass per length, all right, for that would be equal to m over l...