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A solid rubber ball of density d and rad...

A solid rubber ball of density `d` and radius `R` falls vertically through air. Assume that the air resistance acting on the ball is `F=KRV` where K is constant and V is its velocity. Because of this air resistance the ball attains a constant velocity called terminal velocity `v_(T)` after some time. Then `V_(T)`

A

`(4piR^(2)dg)/(3K)`

B

`(3K)/(4piR^(2)dg)`

C

`(4)/(3)(pir^(3)dg)/(K )`

D

`pirdgk`

Text Solution

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The correct Answer is:
A
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NARAYNA-MECHANICAL PROPERTIES OF FLUIDS-C.U.Q(POISEUILLE.S EQUATION)
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