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Two spheres A and B made of same materi...

Two spheres `A` and `B` made of same material of masses `m` and `8m` respectively are dropped into a long viscous liquid column. If `F_(A)` and `F_(B)` are viscous liquid column. If `F_(A)` and `F_(B)` are viscous force on `A` and `B` respectively when they attained their terminal velocity find `F_(A):F_(B)`

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