# Balance with Weights

### Title

Balance with Weights

### Subject

Measurement of Weight

### Description

**The simplest type of balance, the equal-arm, or beam, balance, is an application of a lever. A uniform bar, the beam, is suspended at its exact center on a knife-edge set at right angles to it. The point of support is called the fulcrum. Two pans of equal weight are suspended from the beam, one at each end, at points equidistant from the fulcrum. The object to be weighed is placed on one pan, and standard weights are added to the other until the balance of the beam is established again. The unknown weight can then be determined by adding up the standard weights in the pan.**

### Source

Property of the W&L Physics & Engineering Department

### Date

2002

### Files

### Citation

“Balance with Weights,”

*Digital Exhibits at Washington and Lee University Library*, accessed December 11, 2017, http://omeka.wlu.edu/items/show/220.