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Spherical balls of radius R are falling ...

Spherical balls of radius R are falling in a viscous fluid of velocity v .The retarding viscous force acting on the spherical ball is

A

directly proportional to R but inversely proportional v.

B

directly proportional to both radius R and velocity v.

C

inversely proportional to both radius R and velocity v.

D

inversely proportional to R but directly proportional to velocity v.

Text Solution

Verified by Experts

The correct Answer is:
B
According to Stokes' law,
Viscous drag force, `F=6pietaRv`
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