PhET Interactive Simulations
University of Colorado Boulder
- Proportional Reasoning
- Lever Arm
- Rotational Equilibrium
Play with objects on a teeter totter to learn about balance. Test what you've learned by trying the Balance Challenge game.
Sample Learning Goals
- Predict how objects of various masses can be used to make a plank balance.
- Predict how changing the positions of the masses on the plank will affect the motion of the plank.
- Write rules to predict which way a plank will tilt when objects are placed on it.
- Use your rules to solve puzzles about balancing.