Aladder of mad and length l is released from rest at (theta) = 90 degrees. if the friction at o between the ladder and ground is sufficient to prevent slipping, determine the normal and frictional forces at o as a function of the angle theta if the ladder is given a slight nudge from rest at theta = 90. model the ladder as a uniform slender bar.

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor