NowIsForever
5th January 2008 - 02:49 PM
QUOTE (Dan3+Jan 3 2008, 09:16 PM)
What is the period of revolution for each of the following?
(a) a 13000 rpm centrifuge
2. Electrical wire with a diameter of 0.74 cm is wound on a spool with a radius of 34 cm and a height of 25 cm.
Through how many radians must the spool be turned to wrap one even layer of wire?
What is the length of this wound wire?
Why do you ask?
namaste,
-- Charles
Quantum_Conundrum
7th January 2008 - 01:43 AM
QUOTE (Dan3+Jan 3 2008, 04:16 PM)
What is the period of revolution for each of the following?
(a) a 13000 rpm centrifuge
2. Electrical wire with a diameter of 0.74 cm is wound on a spool with a radius of 34 cm and a height of 25 cm.
Through how many radians must the spool be turned to wrap one even layer of wire?
What is the length of this wound wire?
1) The period is reciprocal of frequency.
Frequency is 13000rpm
so period is
0.00461538..... seconds.
2) this is a calculus problem which you'll need to plug the values into the formula for a spring, and then computer the length of the curve. I do not have this memorized, so I'm not even going to try to do it myself at this point.
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