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# Is stoke's law is applicable to a good degree of accuracy for a sphere falling through...

kumarvaibhav123 | Student, Grade 11 | Salutatorian

Posted January 23, 2013 at 4:31 PM via web

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Is stoke's law is applicable to a good degree of accuracy for a sphere falling through air?

I have read that stole's law is useful for highly viscous liquids. So is stokes law is applicable for air to a good degree of accuracy.

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### 2 Answers |

rohanwords | Student , College Freshman | eNoter

Posted February 5, 2013 at 7:39 PM (Answer #1)

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-Yes ,Stoke Law can be employed safely to get a highly accurate result.(since its a century derieved "Law of Physics).

-The mathamatical expession is :

F(d) is drag force on reaching equlibrium.u is viscosity of liquild under consideration.R is radius of body.v(s) is Terminal Velocity on reaching eqilibrium.

rohanwords | Student , College Freshman | eNoter

Posted February 5, 2013 at 7:43 PM (Answer #2)

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-Yes ,Stoke Law can be employed safely to get a highly accurate result.(since its a century derieved "Law of Physics).

-The mathamatical expession is : F = 6`pi` u R v

F is drag force on reaching equlibrium.

u is viscosity of liquild under consideration.

R is radius of body.

v is Terminal Velocity on reaching eqilibrium.

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