Q1. There is an 80 kg beam attached to a hinge on a wall and supported by the cord. The angle between the cord and the beam is 25 degrees. The beam is 4.5 m long., and cord is attached to the beam a metre from the beam's end. There is a 20 kg beam hanging from the very tip of the beam. Find out the cord tension and the force exerted by the hinge.
Q2. Steam enters a turbine at 380 degrees C and is exhausted at 192 degrees C. What is the maximum efficiency of turbine?