Homework $6-$ Attempt $1$

roblem $9\mathrm{.}122$

The concrete "gravity" dam is held in place by its own

weight $($Figure $1).$ The density of concrete is

${}_c=2\mathrm{.}5M\frac{g}{m^3},$ and water has a density of

${}_w=1\mathrm{.}0M\frac{g}{m^3}.$ Suppose that $a=1\mathrm{.}5m,$

$h=7\mathrm{.}5m.$

Part A

Determine the smallest dimension $d$ that will prevent the dam from overturning

about its end $A.$

Express your answer to three significant figures and include the

appropriate units.

$d=$

Previous Answers

Incorrect; Try Again; $17$ attempts remainingThe concrete "gravity" dam is held in place by its own weight $($Figure $1).$ The density of concrete is $\backslash$rho c

$=2\mathrm{.}5$ Mg$/$m$3$

$,$ and water has a density of $\backslash$rho w

$=1\mathrm{.}0$ Mg$/$m$3$

$.$ Suppose that a

$=1\mathrm{.}5$ m

$,$ h

$=7\mathrm{.}5$ m

$.$