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Apothem
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Homework Statement
Question: "The midpoint of a guitar string oscillates with an amplitude of 2.24mm with a frequency of 400Hz. Calculate:
i) The maximum speed at this point
ii) The maximum acceleration of the string at this point"
Homework Equations
Suitable formulas: x=Asin(2*pi*f*t) ; a=-(2*pi*f)2(x) ; v=(2*pi*f)(A)
where A= amplitude/m ; f=frequency/Hz ; t=time/s
The Attempt at a Solution
Attempted Solution:
I think I am alright with part i) I did: v=(2*pi*400)*(2.24x10-3)=5.6ms-1
However for part ii) I am a bit unsure, do I take x to be the amplitude, but at the midpoint would x not be 0, so the acceleration is 0 ms-2?
(I originally posted this in the wrong section, and reposted it in the correct section, sorry if I should not have reposted it in a new section)