A carbon-fiber reinforced composite has the following elastic constants: EXX= 150 GPa, GXY= 5.0 GPa, νXY= 0.25, and νYX= 0.020 The composite is formed into a thin-walled cylinder with the X and the Y directions aligned at 45º tothe cylinder axis. The cylinder has an average radius of 100 mm, a wall thickness of 2.0 mm, and alength of 1500 mm. What is the relative twist between the two ends when the cylinder is pressurized to 3MPa

Asimple speed reducer is composed of 2 spur gears. the pinion gear has a pitch diameter of 0.75" and 36 teeth while the driven gear has a pitch diameter of 4.0" and 192 teeth. a)-what is the diametral pitch of each gear? b)-if an electric motor rotating ccw at 3000 rpm is coupled to the pinion, what is the rotational speed of the driven gear? c)-if the torque delivered to the pinion is 1 n-m, what is the torque on the driven gear? d)-what is the power transmitted by the gear train?