A body of mass 100g is rotating in a vertical circular path of radius 50cm with a uniform velocity of 9.8 m/s. In figure which point A, B, C, and D tension of the string will be maximum? Analyze mathematically

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.