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ajprincess
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Please help:).
the maximum amplitude and the maximum acceleration of the foundation of an industrial fan were found to be x_max=0.2mm and a_max=0.3
 2 years ago
 2 years ago
ajprincess Group Title
Please help:). the maximum amplitude and the maximum acceleration of the foundation of an industrial fan were found to be x_max=0.2mm and a_max=0.3
 2 years ago
 2 years ago

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ajprincess Group TitleBest ResponseYou've already chosen the best response.1
Here dw:1352046269529:dw
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
so whats the question, that is correct \(a=\ddot x\) where differentiation is w.r.t time.
 2 years ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.1
oops sorry forgot to post the question
 2 years ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.1
Determine the operating speed of the fan.
 2 years ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.1
dw:1352046585292:dw Am I right?
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
if u take x as sinusoidal, then x_max = A=0.2mm are you suppose to take it as sinusoidal ?
 2 years ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.1
i am nt sure. Bt in the answr given they use \(x=Acos(\omega t)\) i dnt get why they use it.
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
i would write that in this manner , you are correct numerically. x=A , \(\ddot x =Aw^2\) so w^2= 0.3/0.2 as A=0.2 and \(\ddot x =0.3\)
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
and this speed you will get it in rad/sec ofcourse by taking sqrt of w^2
 2 years ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.1
where do we use \(x=Asin\omega t\) and \(x=Acos\omega t\)? Are they equal? I am nt getting this.
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
they aren't equal. just phase shift of pi/2 so either of them can be used. but in this question even it doesn't make sense to me using sinusoidal wave for fan equation, if it is given, then its ok.
 2 years ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.1
so what equation should be used here @hartnn?
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
not sure, need to google it ..but since in your given answer sine waves are used, your teacher/course must expect u to take it as sinusoidal everytime....
 2 years ago

ajprincess Group TitleBest ResponseYou've already chosen the best response.1
Ha k. Thanxxxxx a lot for helping me:)
 2 years ago
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