Two spherical balls of radii r1 and r2 (<r1) and densityρs are tied up with a long string and released in a long viscous liquid column of lesser density ρ with the string just taut as shown. The tension of the string when the terminal velocity is attained is

Two spherical balls of radii r1 and r2 (<r1) and densityρs are tied u

1.	Two spherical balls of radii r1 and r2 (<r1) and densityρs are tied up with a long string and released in a long viscous liquid column of lesser density ρ with the string just taut as shown. The tension of the string when the terminal velocity is attained is
Answer» Two spherical balls of radii $r_{1}$ and $r_{2}$ $(< r_{1})$ and density $ρ_{s}$ are tied up with a long string and released in a long viscous liquid column of lesser density $ρ$ with the string just taut as shown. The tension of the string when the terminal velocity is attained is

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Two spherical balls of radii r1 and r2 (&lt;r1) and densityρs are tied up with a long string and released in a long viscous liquid column of lesser density ρ with the string just taut as shown. The tension of the string when the terminal velocity is attained is

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Two spherical balls of radii r1 and r2 (<r1) and densityρs are tied up with a long string and released in a long viscous liquid column of lesser density ρ with the string just taut as shown. The tension of the string when the terminal velocity is attained is