First slide

Viscosity

Question

A sphere of radius R is gently dropped in a liquid of viscosity Tl in a vertical uniform tube. It attains a terminal velocity v. Another sphere of radius 2R when dropped into the same liquid will attain a terminal velocity:

Moderate

A

v
B

2v
C

4v
D

9v

Solution

$v_{r} \infty r^{2} \Rightarrow \frac{v_{T}'}{v} = {(\frac{2 R}{R})}^{2} = 4 \Rightarrow v_{T}' = 4 v$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App