Test Version A

$19.[4$ points$]$ A $2\mathrm{.}00-$m rod of negligible mass connects two very small objects at its ends. The mass of one object is $1\mathrm{.}00$ kg and the mass of the other is unknown. The center of mass of this system is on the rod a distance $1\mathrm{.}60$ m from the $1\mathrm{.}00-kg$ mass object. What is the mass of the other object?

A$.4\mathrm{.}11$ kg

B$.3\mathrm{.}22$ kg

C$.4\mathrm{.}00$ kg

D$.0\mathrm{.}250$ kg

E$.0\mathrm{.}800$ kg