Please, i need answers to this question on Wave on a string, so that i can compare your solutions to mine.
A steel string (with density of 7.8 g/cm3) is clamped at both ends and has a length of 40 cm.
a) At which stress in the string does it oscillate in its fundamental mode with a frequency of 440 Hz?
b) What is then the tension in the string assuming it has a diameter of 0.50 mm?
c) What would be the normal mode frequency when the string would have half the original length, be only twice as thick and be stretched with only a quarter of the original force?
@MIT 6

Question

Please, i need answers to this question on Wave on a string, so that i can compare your solutions to mine.
A steel string (with density of 7.8 g/cm3) is clamped at both ends and has a length of 40 cm.
a) At which stress in the string does it oscillate in its fundamental mode with a frequency of 440 Hz?
b) What is then the tension in the string assuming it has a diameter of 0.50 mm?
c) What would be the normal mode frequency when the string would have half the original length, be only twice as thick and be stretched with only a quarter of the original force?
       @MIT 6

turingtest · Answer

I feel bad for you that none of your questions seem to be getting answered. 

I think it is because you have many long problems which require quite a number of specific equations that people here don't know off the top of their head. 

If you could provide at least some the equations that you are using this would assist us greatly.

y2o2 · Answer

What do you mean by stress ?

anonymous · Answer

I think he means from Young's Modulus?