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Question

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 to 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

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Text SolutionText solutionverified iconVerified

Retarding force acting on a ball falling into a viscous fluid
Where Radius of ball 
velocity of ball 
coefficient of viscosity
and or in words,
Retarding force is directly proportional to both and
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Question Text
Spherical balls of radius R are falling in a viscous fluid of velocity v. The retarding viscous force acting on the spherical ball is
Answer TypeText solution:1
Upvotes151