Beam Balance & Parallel Forces

Learning objectives

Use the prepared scene to investigate the following physical ideas:

• Moments
• Rotational equilibrium
• Parallel forces

Available controls

The workspace lets you pause and play the scene, select its objects, edit the starting properties described below, reset the scene, and inspect configured live graph measurements.

1. Move the masses along the beam.
2. Adjust either mass.
3. Press Play and observe the beam angle.

Expected observations

• The beam balances when opposing moments are equal.
• Moving a mass farther from the pivot increases its moment.
• Unequal moments create angular acceleration.

Model limitations

The beam, pivot, and attached masses are idealized. Flexing, bearing friction, and three-dimensional motion are not represented.

Simulation output is educational and approximate. Verify important results with independent calculations or physical measurements.