$5.$ A vertical, circular cross section jet of air strikes a conical deflector as indicated in the

figure. A vertical anchoring force of FA$=0\mathrm{.}1$N is required to hold the deflector in place.

Determine the mass $($kg$)$ of the deflector. The magnitude of velocity of the air remains

constant. $($Dj$=0\mathrm{.}1$m$,$ Vj$=30$m$/$s$)0$#