Viscous Force

viscous force (Fv) FxA Fx velocity gradiest FRAAV BX F=NA AV DX n= (oefficient of viscosity n- F Dx A AV unit m n = pa m/s n = Pas poiscullie = SIunit poise cgs unit roiscullie = 10 poise) poise = 10' pas

in liquids when temperature ( increases the viscusity decrea ses. in gases , when temperature increases the viscosity also in creayes.