### Simple Lever

"Any rod, or bar, which is used in raising a weight, or surmounting a resistance, by being placed on…

### Simple Pulley

"...represents a simple pulley, with a single fixed wheel. In other forms of the machine, the wheel…

### Single Movable Pulley

"In the single moveable pulley, the same rope passes from the fixed point, A, to the power, P. It is…

### Fishing Sinker

A weight used to force a lure or bait to increase its rate of sink, anchoring ability, and/or casting…

### Specific Gravity of Solids

One of the commonest ways of determining the density of a solid body is to weight it first in air and…

### Spring Weighing Machine

An illustration of a price computing spring weighing machine.

### Steelyard

The steelyard is an instrument for weighing bodies by means of a single weight which can be hung at…

### Third Class Lever

"A Lever of the Third Kind is one in which the power is between the weight and the fulcrum." —Quackenbos…

### Third Order of Lever

In the third order of levers, the power is between the weight and the fulcrum.

### Torricellian Experiment

This experiment showed that every surface exposed to the atmosphere sustains a normal pressure equal…

### Vector Showing Force at Angle of 20 degrees

OP is a vector (directed quantity) showing the force by a weight acting on it at an angle of 20 degrees.

### Water Weighing

"Take a piece of ivory, or any other substance that will sink in water, and weigh it accurately in the…

### Wedge

"The wedge is a movable inclined plane, and is used for moving a great weight a short distance. A common…

### Price Computing Weighing Machine

An illustration of a price computing weighing machine.

### Price Computing Weighing Machine

An illustration of a price computing weighing machine using an even even balance and pendulum.

### Weight Measures

An illustration showing that 1 milliliter of water weighs the same as a 1 gram.

### Comparison of Units of Weight

Illustration comparing the fundamental units of measure ounces to grams and pounds to kilograms.

### Weights and Pulleys

Three cylindrical weights, suspended on ropes and pulleys.

### Wheel and Axle

"To change the direction, it is only necessary that the rope by which the weight is to be raised, should…

### Wheel and Axle

"Considered as a lever, the fulcrum is at the common axis, while the arms of the lever are the radii…

### Woman Holding Scale with Man

An illustration of a woman holding a scale with a man.