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A rain drop of radius 1.5 mm, experiences a drag force $F = (2 \times 10^{- 5} V) N$ , while falling through air from a height 2km, with a velocity v. The terminal velocity of the rain drop will be nearly (use g = 10m/s^2-)

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detailed solution

Correct option is C

F=mgF=2×10−5v=43π1.5×10−33×103×10⇒ v=2π3×(2.25)=4.7m/s

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A rain drop of radius 1.5 mm, experiences a drag force F=2×10−5VN, while falling through air from a height 2km, with a velocity v. The terminal velocity of the rain drop will be nearly (use g = 10m/s2-)

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Ready to Test Your Skills?

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A rain drop of radius 1.5 mm, experiences a drag force $F = (2 \times 10^{- 5} V) N$ , while falling through air from a height 2km, with a velocity v. The terminal velocity of the rain drop will be nearly (use g = 10m/s^2-)