Physics 7408/3BC June 2021

The AQA A-level Physics Paper 3B (November 2021), Option C (Engineering Physics), explores principles of rotational dynamics, energy transfer, and thermodynamics. Topics include moment of inertia, angular speed, and rotational energy in gymnastics and yo-yo motion. Key areas also cover performance analysis of internal combustion engines using efficiency metrics, pressure-volume work for gas expansion, and the principles of heat engines and refrigerators. Practical problem-solving involves calculations of torque, energy efficiency, and mechanical system optimization. Keywords: AQA Physics, engineering physics, rotational dynamics, moment of inertia, internal combustion engine, heat engine, thermodynamics, efficiency.