Friend has a physics problem

A piano wire 0.80mm long and 0.80mm in diameter is fixed on one end.
The other end is wrapped around a tuning peg 3.0mm in diameter.
Initially the wire, whose Young's modulus is 2X10^10,
has a tension of 20N .

Find the tension in the wire after the tuning peg has been turned
through one complete revolution
He's got a problem alright...
I have a friend with a physics problem, but I think she is getting a reduction when she gets back from terrorist training camps.
I dont know, but have you tried using pi?
math
how can it be 0.8mm long and 0.8mm in diameter? do you mean 0.8m long?
42
tension doesn't matter, just call a piano tuner.
can anyone help, she's needs the answer shortly
already gave you an answer, bud.
it will take off.
quote:
tension doesn't matter, just call a piano tuner.


fail
Never seen a square piece of piano wire.
quote:
0.80mm in diameter
Okay, never seen a 0.8mm long piece of piano wire before.
quote:

Okay, never seen a 0.8mm long piece of piano wire before.


This I would agree with
The tuning peg is moot.
138.4 N

Assuming you meant .8 m for the length instead of .8 mm
who does problems like this with actual numbers?

ada, shut it and post a picture of Puddin!
ARE YOU STOCKIN ME AND MY PUDDIN!!?
not you...and SHE IS MY PUDDIN!
gawd that's effin creepy.

try not to kill anyone tonight.
GET BACK IN THE STORM DRAIN
damn that is great
you need to add that first one as your profile pic.
Who else has a math problem for the clown?
GTech Ag....your a ramblin wreck
this thread is nails
ONLY ON TEXAGS