A rectangular piece of sheet metal is clamped along edge AB in a machine called a brake. The sheet is to be bent along line AB by applying a y direction force F. Determine the moment about line AB if F=200 lb

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.