Problem 725 Repeat Problem 239 without using integration.

Solution 725

$R = \frac{2}{3}bh = \frac{2}{3}(16)(360)$

$R = 3840 \, \text{ lb}$ answer

$\bar{x} = \text{ centroid of parabola}$

$x = \frac{3}{5}h = \frac{3}{5}(16)$

$x = 9.6 \, \text{ ft}$ answer

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