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Friction and Vertical Circular Motion Problems

The velocity ...

Question

The velocity of a kerosene oil in a horizontal pipe is $5 m / s$ . If $g = 10 m / s^{2}$ then the velocity head of oil will be

1.25 m

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12.5 m

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0.125 m

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125 m

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Solution

The correct option is A $1.25 m$
Velocity head $= \frac{v^{2}}{2 g} = \frac{5^{2}}{2 \times 10} = 1.25 m$

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