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A force of 3.14 N is required to drag a sphere of radius 4 cm

Question

A force of 3.14 N is required to drag a sphere of radius 4 cm with a speed of 5 m $s^{- 1}$ in a medium in gravity free space. Find the coefficient of the viscosity of the medium.

F =

9 π ηr v

F =

6 π ηr v

F =

7 π ηr v

F =

8 π ηr v

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A force of 3.14 N is required to drag a sphere of radius 4 cm with a speed of 5 m

s^{- 1}

in a medium in gravity free space. Find the coefficient of the viscosity of the medium.

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Text solutionVerified

F =

6 π ηr v

η = \frac{F}{6 π r v} = \frac{3.14}{( 6 ) ( 3.14 ) ( 4 ) ( 5 \times 1 0 ^{2} )} = 8.3 \times 1 0^{- 5} p o i se

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Question Text	A force of 3.14 N is required to drag a sphere of radius 4 cm with a speed of 5 m $s^{- 1}$ in a medium in gravity free space. Find the coefficient of the viscosity of the medium.
Answer Type	Text solution:1
Upvotes	150