111 Carilah momen inersianya jika cakram tersebut diputar mengelilingi sumbu sumbu yang melalui pusat dan tegak lurus cakram ∆ = . 2 = . . 2 ∆ = . ( 2− −1 2 ). 2 ∆ = ( + −1)( − −1). 2 ∆ =∆ . 2. . ∆ . 2 = 2 � 3 = 2 5 3 [ 4]35 = 2 [54 −34] = 2 . 544 = 2 16 3 544 = 51 2 M =δA → δ =M A =π 3 (52−32) =16 3 π
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