(a) Using singularity functions, write the equations for the shear and bending moment for the beam and loading shown. (b) Determine the maximum value of the bending moment in the beam

EXSC223:Weekof8/29/16 NotesfromthetextbookCh.3.3-3.5 3.3Passivemembranetransportisdiffusionofmoleculesdownaconcentrationgradient • Passivetransport o Diffusion § Tendencyofmoleculesorionstomovefromanareawheretheyarein highconcentrationtoanareawheretheyareinlowconcentration § Movedown/alongtheconcentrationgradient § Randommotions • Poweredbyintrinsickineticenergy • Collisionscauseparticlestogoinrandomdirections o Particlesscatteranddisperse § Speedofdiffusionisaffectedby: • Moleculesize(smallermolecules=fasterdiffusionrate) • Temperature(warmersystem=fasterdiffusionrate) § Inaclosedcontainer,auniformmixturewillbetheresult § Atequilibrium • Moleculesmoveequallyinalldirections • Nonetmovement o Filtration • Plasmamembrane o Selectivelypermeable § Letsnutrientsin § Keepsbadsubstancesout § Keepsvaluableproteinsin § Letswasteout o Unhealthycellshaveadamagedplasmamembrane o Moleculesorionscandiffuseinif: § Lipidsoluble