TM 612 Kinetic model: flywheel
The resistance with which a rigid body opposes a change to its rotation is indicated by the mass moment of inertia. It is a measure of the inertia of a body in rotation. Using the TM 612 kinetic model, we can conduct basic experiments on uniformly accelerated rotational motion.
The experimental unit comprises a flywheel with shaft, a cable and a set of weights. The shaft forms the axis of
rotation in the centre of gravity of the flywheel. It is mounted on two bearings. One end of the cable is attached to the shaft. A weight is attached to the other end. The attached weight sets the flywheel in a uniformly accelerated motion.
The time needed to roll down is measured and compared to the times for other weights.
The mass moment of inertia of the flywheel is calculated from the measured time, the mass of the flywheel and the acceleration distance.
The experimental unit is designed to be fixed to a wall.
- investigation of uniformly accelerated rotational motion
Flywheel
- diameter: 300mm
- thickness: 40mm
- mass: 22,2kg
Shaft
- diameter: 22mm
Weight for the drive
- 1x 1N (hanger)
- 4x 1N
- 3x 5N
- investigate the inertia of a flywheel
- generate a uniformly accelerated rotational motion of the flywheel
- driven by weights
- influence of weight on time taken to roll down
- measure the time and the acceleration distance
- determine the mass moment of inertia
- bracket for wall mounting
- determine the mass moment of inertia by experiment
- dynamic fundamental law of rotational movement