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Buoyant Force

Water drop of...

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Water drop of radius 1.5 mm is falling from height 1 km having drag constant .5 density of water drop 1000 kg per metre cube and density of air is 1.29 kg per metre cube find its terminal velocity

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Q. A water drop of radius

1.5 m m

is falling from height

1 k m

having drag constant

0.5

density of water drop is

1000 k g / m^{3}

and density of air is

1.29 k g / m^{3}

. Find the terminal velocity.

Q. A water drop of radius

1.5 m m

is falling from height

1 k m

having drag constant

0.5

density of water frop is

1000

kilogram par meter cube density of air

12.5 k m / m

cube fine its terminal velocity

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Q. Find the terminal velocity of a free falling water drop of radius

0.04 mm

:-
The coefficient of viscosity of air is

1.9 \times 10^{- 5} {Ns/m}^{2}

and its density is

1.2 {kg/m}^{3}

. Density of water is

1000 {kg/m}^{3}

g = 10 {m/s}^{2}

.

Q. Find the terminal velocity of a rain drop of radius 0.01 mm. The coefficient o viscosity of air

1.8 x 10^{- 5} N - s / m^{2}

and its density is 1.2 kg/

m^{3}

. Density of water=1000 kg/

m^{3}

T a k e g = 10 m / s^{- 2} (F o r c e o f b u o y a n c y d u e t o a i r i s n e g l e c t e d)

Q. A drop of water of radius 0.0015 mm is falling in air. If the coefficient of viscosity of air is

2.0 \times 10^{- 5} k g m^{- 1} s^{- 1}

, the terminal velocity of the drop will be:
(The density of water =

10^{3} k g m^{- 3}

g = 10 m s^{- 2}

)

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