Question

Two small spherical metal balls, having equal
masses, are made from materials of densities PA
and p (p = 8p, and have radii of 1 mm and 2
mm, respectively, they are made to fall vertically
(from rest) in a viscous medium whose coefficient
of viscosity equals n and whose density is 0.1p.
The ratio of their terminal velocities would be,
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Answer 1

Answer:

See the picture use terminal velocity formula