Re: [問題] 請問rpm與g之換算
※ 引述《swordfish.bbs@bbs.nchu.edu.tw (高義！你真他媽的雜碎)》之銘言：
: ※ 引述《iawd@kkcity.com.tw ( )》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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09/18 15:11, , 1F
09/18 15:11, 1F
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