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A soil is composed of solid spherical grains of identical specific gravity and diameter between 0.075 mm and 0.0075 mm. If the terminal velocity of the largest particle falling through water without flocculation is 0.5 mm/s, that for the smallest particle would be
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- 0.005 mm/s
- 0.05 mm/s
- 5 mm/s
- 50 mm/s
Correct Option: A
Terminal velocity,
| v = | (s - 1)d2 | 18v |
∴ v ∝ d2
v1 = .5 mm/s
d1 = 0.075 mm
d2 = 0.0075 mm
v2 =?
| = | ||||
| v2 | d22 |
| = | ||||
| v2 | 0.00752 |
| v2 = | = 0.005 mm/s | 102 |
