A balance scale holding 5 pounds on the left and 3 and 2 pound weights on the right showing 3+2=5.

### Center of Gravity of Rod with Weights

"When two bodies of equal weight are connected by a rod, the centre of gravity will lie in the middle…

### Dumb-bells

Two spheres of iron or other heavy material, connected by a short bar for a handle; used as a weight…

### Bar and Weights in Equilibrium

"A bar with weights attached that is in equilibrium." -Avery 1895

### Bar and Weights in Equilibrium

"A bar with weights attached that is in equilibrium." -Avery 1895

### Geometry

Two students drawing geometrical shapes on the chalkboard. A student is also using a scale while students…

### Lever Balanced on fulcrum With Weights

An illustration of a lever with weights m and n with distances a and b from fulcrum. Illustration could…

### Steel-yard Used as a Lever

Illustration of an ordinary steel-yard being used as a lever. F represents the fulcrum. Weight P is…

### Hydraulic Machine Exerting Pressure

Illustration of a hydraulic machine. "A principle known as Pascal's Law states that pressure exerted…

### Attachment for the Whirling Table

"...represents a very valuable attachment for the whirling table. A ball of known mass slides on a horizonal…

### Windlass

A cylinder or roller for raising weights, turned by a crank or lever, with a rope or chain attached…