Can you easily lift more than your own weight? With a pulley system, almost anyone can manage this challenge. Scholars adjust the mechanical advantage (number of pulleys), weight of object being lifted, and the length of rope pulled. The...

Who says playing around in class is a bad idea? Precocious physicists engage in building mechanisms that include cams, gears, pulleys, and levers using an interactive lesson. After completing toy tutorials about each topic, users build a...

In this online interactive philosophy worksheet, students respond to 10 short answer and essay questions about Galileo's contributions to science. 

This lab is designed to have students learn how the size, mass and mass distribution of a pulley influences the rate at which a mass attached to the pulley will accelerate. The pulley is frictionless and the string's mass is negligible.

This lab is designed to have students find the relationship between the number of pulleys used and the force required to lift a mass. Students will see that it is not actually the number of pulleys that matter, but the number of strings...

[Free Registration/Login Required] A video module where students learn about the relationship between force, work, energy, and mechanical advantage using a simple machine.

Simulation of an Atwood machine where two masses of varying densities are suspended in water using a pulley system. Adjust the densities of the masses, their positions and the water level to see how the changing gravitational, buoyant,...

Create an Atwood's machine and a modified Atwood's machine in this interactive. Change the amount of mass on either object, introduce friction forces, and measure distance and time in order to calculate the acceleration.

This site, in German, offers numerous apps that illustrate common physics principles. Apps are organized into categories: mechanics, oscillations and waves, electrodynamics, optics, thermodynamics, the theory of relativity, physics of...