A small ball of mass M and density ρ is dropped in a viscous liquid of density ρ0. After some time, the ball falls with a constant velocity. What is the viscous force on the ball?
Held on 6 Apr 2023 · Verified 6 Jul 2026.
F=Mg(1+ρρ0)
F=Mg(1+ρ0ρ)
F=Mg(1−ρρ0)
F=Mg(1±ρρ0)
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