Girl in the Mirror
How large does a mirror need to be to see your full body? Move the girl and use the checkboxes to find an answer to this question.
Inclined Plane with Two Masses and a Pulley
Use the sliders to adjust the angle of the incline, and the two masses. Hit the "Run" button to watch the objects accelerate. Click the checkbox to show numerical values for acceleration, tension in the string, velocity, time, and the change in height of m1.