Derive an expression for the terminal velocity of a sphere falling through a viscous liquid.
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The terminal velocity acquired by the ball of radius r when dropped through a liquid of viscosity η and density ρ is, v=2r2(ρo−ρ)g9η. Note:Terminal velocity is defined as the maximum velocity attained by a body as it falls through a fluid. ... It also depends upon densities of the body and the medium.
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