Keywords lever, fulcrum, force, load, simple machine, distance, speed, tools, mechanics Email us at [email protected] if you have questions about the footage and are interested in using it in ...

For the uninitiated, ornithopters are machines ... known as levers. Technically speaking, levers predate humanity. You find them in biology — your forearm is a good example which I’ll go ...

A lever is a simple mechanism that uses a bar to pivot ... because you can use the lever to help with the hard work. Some examples of everyday levers are scissors, bottle openers and cooking ...