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When a solid ball of volume V is falling...

When a solid ball of volume V is falling through a viscous liquid, a viscous force F acts of it. If another ball of volume 2 V of the same material is falling through the same liquid then the viscous force experienced by it will be (when both fall with terminal velocities).

A

F

B

`(F)/(2)`

C

2F

D

`(F)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
`F=6pieta rv (because v prop r^(2), F prop r^(2), F prop V)`
`rArr (F_(1))/(F_(2))=(V_(1))/(V_(2))`
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