The assembly in $($Figure $1)$ is made from a steel hemisphere, stst $=7\mathrm{.}80$ Mg$/$m$3$Mg$/$m$3,$ and an aluminum cylinder, alal $=2\mathrm{.}70$ Mg$/$m$3$Mg$/$m$3.$

Figure

$1$ of $1$

Part A

Determine the height hh of the cylinder so that the mass center of the assembly is located at z$$z$=210$ mmmm$.$

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

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hh $=$

$260$mm

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