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4 aliran berubah lambat laun.pdf

4 aliran berubah lambat laun.pdf

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Dengan demikian maka :−if=−ib+dddxcos θ + αd ⎛dd ⎜⎝2V dd⎞2g ⎟ ⎠dxTanda negatif dari persamaan tersebutmenunjukkan penurunan di arah x positifdddx=cosib− if2d ⎛V⎞+ α ⎜ ⎟dd ⎝ 2g ⎠θ (4.5)Persamaan (4.5) merupakan persamaan dinamis<strong>aliran</strong> <strong>berubah</strong> <strong>lambat</strong> <strong>laun</strong>.

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