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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
 one year ago
 one year ago
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
 one year ago
 one year ago

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ajprincessBest ResponseYou've already chosen the best response.1
Here dw:1352046269529:dw
 one year ago

hartnnBest 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.
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
oops sorry forgot to post the question
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
Determine the operating speed of the fan.
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
dw:1352046585292:dw Am I right?
 one year ago

hartnnBest 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 ?
 one year ago

ajprincessBest 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.
 one year ago

hartnnBest 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 \(\ddot x =0.3\)
 one year ago

hartnnBest 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
 one year ago

ajprincessBest 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.
 one year ago

hartnnBest 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.
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
so what equation should be used here @hartnn?
 one year ago

hartnnBest 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....
 one year ago

ajprincessBest ResponseYou've already chosen the best response.1
Ha k. Thanxxxxx a lot for helping me:)
 one year ago
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