Don't understand problem

meekadn · #1 Mar 6, 2006, 06:50 AM

I don't understand how to complete this problem: Find the minimum diameter of an 17.3 m long tungsten wire that will stretch no more than 9.43 mm when a load of 361 kg is hung on the lower end.

dmatos · Mar 21, 2006, 05:57 PM

You'll need to use the Young's modulus of tungsten. It can describe the force exerted by an object under strain:

F = Y x A x deltaL / Lo

I don't know if your prof wants you to take into account the weight of the tungsten wire as well as the load, though.



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