The $2-m-$wide rectangular gate is pinned at its center A and is prevented from rotating by the block at $B($Figure $1).$

${}_w=1\mathrm{.}0M\frac{g}{m^3}.$ Suppose that $a=1\mathrm{.}3m$

Figure

$1$ of $1$

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Review your calculations and make sure you round to $3$ significant figures in the last step.

Part B

Determine the magnitude of reaction at $B$ due to hydrostatic pressure.

Express your answer to three significant figures and include the appropriate units.

$F_B=$

$$

$$

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