Asection of shaft diameter, d, joined to a section of diameter with fillet which produces an actual stress concentration factor of kf-1.22 for a shaft in torsion. take sys-560mpa and sn-375mpa. using a size factor of 0.85, surface finish factor of 0.85 and a load factor of 0.6, determine the size of the shaft required for a torque which varies from 0 to 2.26 kn-m. use design factor of 2.0

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

Acar travels 40m in 8 seconds find the car speed