Acurved hook has a circular cross-section of radius 1-in and is made of 1040cd steel. the distance of the centroidal axis from the axis of curvature is 3-in. a repeated force is applied to the hook which causes the bending moment at a cross-section to vary between 0and 10 kip-in. calculate the safety factor at the inner-most pointon the cross-sectionforinfinitelife. ignore the effect of normal internal reactions due to the load on the hook. a reliability of 50% is required from the estimate of safety factor. assume the surface of the hook is commercially polished.

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way