1 26. A wheel barrow is used to lift a 150 lb load. The length from the wheel axle to the center of the
load is 2.0 ft. The length from the wheel and axle to the effort is 6.0 ft.
a. What is the ideal mechanical advantage of the system?
b. using the static equilibrium calculations, calculate the effort force needed to overcome the resistance force in the system

Plot schematically the tensile stress versus strain curves for a typical thermoplastic material at a temperature below its glass transition temperature (tg and at a temperature above its tg, respectively. do the same for a typical thermosetting material. list in a table any differences or similarities between the two materials at t> tg and t < tg, respectively, and relate them to the structures of the two types of polymers