A drop of water of radius r is falling through the air of coefficient of viscosity - with a constant velocity of v- The resultant force on the drop is-

The correct option is B zeroWhen a drop is falling at constant velocity, #160;viscous force is balanced by weight, hence #160;resultant force is zero. ...

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Standard VIII

Physics

Viscosity

A drop of wat...

Question

A drop of water of radius r is falling through the air of coefficient of viscosity $η$ with a constant velocity of v. The resultant force on the drop is:

\frac{1}{6 π η r v}

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6 π η r v

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\sqrt{6 π η r v}

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zero

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Solution

The correct option is B zero
When a drop is falling at constant velocity, viscous force is balanced by weight, hence resultant force is zero.

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A drop of water of radius r is falling through the air of coefficient of viscosity η with a constant velocity of v. The resultant force on the drop is:

The correct option is B zeroWhen a drop is falling at constant velocity, viscous force is balanced by weight, hence resultant force is zero.

A drop of water of radius r is falling through the air of coefficient of viscosity $η$ with a constant velocity of v. The resultant force on the drop is:

The correct option is B zero
When a drop is falling at constant velocity, viscous force is balanced by weight, hence resultant force is zero.