A $1-$cm$-$diameter disk of rubber is formed by adding $0\mathrm{.}6$ gram of sulfur to

$2$ kilograms of natural rubber with M$=150,000($g$)/($m$)$ol$.$ What mass steel plate can be

supported by this material in compression if the rubber disk's thickness is limited to

change by $15\%?[$Useful assumptions: a$)1$ sulfur atom per crosslink; b$)$ Density of the vulcanized

rubber at room temperature is $0\mathrm{.}95($g$)/($c$)$m$^(3)]$