3 years ago

A. B. C. D. -___________

Physics

1 answer:

mixas84 [53]3 years ago

6 0

Where is the data for this question? what is the purpose ?

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The water side of the wall of a 60-m-long dam is a quarter-circle with a radius of 7 m. Determine the hydrostatic force on the d

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Answer:

$26852726.19\ \text{N}$

$57.52^{\circ}$

Explanation:

r = Radius of circle = 7 m

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Vertical force is given by

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Resultant force is

$F=\sqrt{F_x^2+F_y^2}\\\Rightarrow F=\sqrt{14420700^2+22651982.59^2}\\\Rightarrow F=26852726.19\ \text{N}$

The hydrostatic force on the dam is $26852726.19\ \text{N}$ .

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$\theta=\tan^{-1}\dfrac{F_y}{F_x}\\\Rightarrow \theta=\tan^{-1}\dfrac{22651982.59}{14420700}\\\Rightarrow \theta=57.52^{\circ}$

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