A 6-meter long rigid rod with a mass of 2 kg has small weights attached to its ends. The system is attached to a frictionless axle that passes through the rod 2 meters from the left end, as shown in the figure. When released from rest in a horizontal orientation, the system begins to rotate. What is its angular acceleration?​

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)