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## Wheel and axle - Wikipedia

en.wikipedia.org/wiki/Wheel_and_axle

The wheel and axle is one of six simple machines identified by Renaissance scientists drawing ... The oldest known example of a wooden wheel and its axle was found in 2002 at the Ljubljana Marshes s...

## Dirtmeister: Simple Machines -- Wheel - Scholastic

teacher.scholastic.com/dirtrep/simple/wheel.htm

A wheel and axle is really two machines in one because you can use each part in different ways. The first way is to roll something along. Wheels help you move ...

## What is a Wheel and Axle simple machine? - eSchooltoday

eschooltoday.com/science/simple-machines/what-is-a-wheel-and-axle.html

The Lever simple machine ... A wheel alone or an axle alone is not a simple machine. ... A simple door knob is another great example of the wheel and axle.

## Simple Machines: Wheel and Axel Tutorial | Sophia Learning

www.sophia.org/simple-machines-wheel-and-axel-top

Imagine moving a cart full of groceries around the supermarket in a cart with no wheels. The wheel and axel together as a working part is an example of a simple  ...

## 6 Simple Machines: Making Work Easier - Live Science

www.livescience.com/49106-simple-machines.html

Dec 12, 2014 ... These six simple machines are the wheel and axle, the lever, the ... Mathematically, this is expressed as W = F × D. For example, to lift an object ...

## Simple Machines - Wheel And Axle - Radius, Circular, System, and ...

science.jrank.org/pages/4056/Machines-Simple-Wheel-axle.html

A second variation of the lever is the simple machine known as a wheel and axle. ... For example, suppose that the crank on a water well turns through a radius ...

Jul 10, 2012 ... http://mocomi.com/ presents: Wheel and Axle - Simple Machines When we have to ... For more such cool physics videos and articles go to: ...

## Simple Machines

Effort – effort is the force placed on the simple machine to move the load. Also called ... Trade-off: The way an inclined plane works is that to save effort, you.

## Simple Machines - HyperPhysics

hyperphysics.phy-astr.gsu.edu/hbase/Mechanics/lever.html

The lever is one of the so-called "simple machines" from which many more complex ... The clear advantage of the wheel and axle over a simple lever is that the ...

## Simple machines and tools - Explain that Stuff

www.explainthatstuff.com/toolsmachines.html

Jun 3, 2016 ... In science, tools like this are called simple machines. ... Photo: This hydraulic digger uses a collection of simple machines (wheels, axles, and levers) to magnify the force its driver ... A see-saw is an example of a class-1 lever.