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E = \frac{1}{2} I \omega^2

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  • I = \frac{1}{2} m(r^2+r_o^2)
    ~m ; ~r ; ~r_o
  • ~I = m r^2
  • I = \frac{1}{2} mr^2

, ~\omega ~S

~\omega = 2 \pi S

E = m(\pi S)^2(r^2+r_o^2)

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1964 .

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  1. Lynn White, Jr., Theophilus Redivivus, Technology and Culture, Vol. 5, No. 2. (Spring, 1964), Review, pp. 224-233 (233)
  2. Encyclopedia of the Industrial Revolution, 1750-2007: Steam Engine (.)