Re: [問題] 請問rpm與g之換算

[graddivcurl (為所應為)]

※ 引述《[e-mail] (高義！你真他媽的雜碎)》之銘言：
: ※ 引述《[e-mail] ( )》之銘言：
:   請問...能用物理離心力公式推導出此方程是嗎？
:   我用 F＝V^2/R (V＝2ΠR/T)去推算
:   不論怎麼單位換算 就是算不出下面公式 XD
:   請大大幫幫忙^^

: > g = (1.118 * 10^-5) * R * S^2


(1) Because rpm is revolution(s) per minute,
rpm = (w/(2Pi))*60 where w is radian/sec

Thus, w=(Pi/30)*rpm

(2) a=rw^2 (because a=(v^2)/r, & v=rw)

(3) RCF (relative centrifugal force) is defined as

RCF= (a/g)= (rw^2)/980 = {r[(Pi/30)*rpm]^2}/980
   =1.119* 10^(-5) * (rpm)^2 * r
done!


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推 Phaeton:對嘛 是1.119阿...