A spherical ball of density ρ and radius 0.003 m is dropped into a tube containing a viscous fluid up to the 0 cm mark as shown in the figure. Viscosity of the fluid =1.2160 N.s m−2 and its density ρL=ρ2=1260 kg.m−3. Assume the ball reaches a terminal speed by the 10 cm mark. Find the time taken rounded off to the nearest integer (in sec) by the ball to traverse the distance between the 10 cm and 20 cm mark. Take g=10 ms−2

A spherical ball of density ρ and radius 0.003 m is dropped into a tu

1.	A spherical ball of density ρ and radius 0.003 m is dropped into a tube containing a viscous fluid up to the 0 cm mark as shown in the figure. Viscosity of the fluid =1.2160 N.s m−2 and its density ρL=ρ2=1260 kg.m−3. Assume the ball reaches a terminal speed by the 10 cm mark. Find the time taken rounded off to the nearest integer (in sec) by the ball to traverse the distance between the 10 cm and 20 cm mark. Take g=10 ms−2
Answer» A spherical ball of density $ρ$ and radius $0.003 m$ is dropped into a tube containing a viscous fluid up to the $0 cm$ mark as shown in the figure. Viscosity of the fluid $= 1.2160 {N.s m}^{- 2}$ and its density $ρ_{L} = \frac{ρ}{2} = 1260 {kg.m}^{- 3}$ . Assume the ball reaches a terminal speed by the $10 cm$ mark. Find the time taken rounded off to the nearest integer (in $sec$ ) by the ball to traverse the distance between the $10 cm$ and $20 cm$ mark. Take $g = 10 {ms}^{- 2}$

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