A small $1\mathrm{.}4-$N stone slides down a frictionless bowl, starting from rest at the rim. The bowl itself is a hemisphere of radius $75$ cm$.$ Just as the stone reaches the bottom of the bowl, how hard is the bowl pushing on it$?$

$5\mathrm{.}6$ N$2\mathrm{.}8$ N$0\mathrm{.}70$ N$1\mathrm{.}4$ N$4\mathrm{.}2$ N