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

Spherical balls of radius R are falling in a viscous fluid of viscosit

1.	Spherical balls of radius R are falling in a viscous fluid of viscosity h with a velocity v. The retarding viscous force acting on the spherical ball is :
Answer» directly PROPORTIONAL to R but inversely proportional to velocity v inversely proportional to R but directly proportional to velocity v inversely proportional to both radius Rand velocity v directly proportional to both radius R and velocity v Solution :According to Stoke.s law `F=6etaRv` `thereforeFpropR` and `Fpropv` So the correct CHOICE is (d).

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

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