PBS
Pbs Learning Media: Lever an Obelisk
Investigate the mechanical advantage of the lever in this interactive activity from the NOVA Web site.
TeachEngineering
Teach Engineering: Sum It Up: An Introduction to Static Equilibrium
Students are introduced to static equilibrium by learning how forces and torques are balanced in a well-designed engineering structure. A tower crane is presented as a simplified two-dimensional case. Using Popsicle sticks and hot glue,...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Balancing Act
Learn about balance by placing objects on a playground teeter totter. Take the challenge to show what you learn.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Balancing Act
Play the Balance Challenge game to see how various objects can be used to make a plank such as a teeter totter balance and how changing the position of an object will affect the motion and tilt of the plank.
NASA
Nasa: Weight and Balance Forces Acting on an Airplane
The effects of forces exerted on an airplane wing are discussed both conceptually and mathematically. Illustrations and sample problems and solutions are provided.
Integrated Publishing
Integrated Publishing: Levers
A quite lengthy chapter on the simple machine the lever. Includes uses, classes, mechanical advantage, formulae, etc. A full discussion, with good illustrations.
