The HTM9 Simple flywheel is self-contained wall-mounted teaching equipment that helps to demonstrate the Second Law of Motion and Energy storage. It allows students to verify the relationship between torque and angular acceleration of flywheel. They can study the energy transformations and verify experimental results with the theoretical results. The training equipment has a large steel wheel with a mark on the perimeter, a pointer to count revolutions, and other necessary components such as calibrated weights, a stopwatch, an instruction manual are supplied.