Key concepts Physics Lever Force Tools Mass. Introduction Have you ever wondered how ancient people could lift very heavy objects, such as large stones, to build pyramids? A lever is a simple ...

In this Science Extra from Jiwi's Machines Episode 3, Jiwi demonstrates the principles of levers and balance using a seesaw ...

In this free teacher resource for primary science, presenters Mwaksy and Greg design and make mechanisms that use levers to allow a smaller force to have a greater effect.

A PREMATURELY deployed slowing device could “well be” behind the Virgin Galactic spaceship crash, Virgin’s boss Richard Branson said Monday while hitting out at “hurtful” critics and ...

A lever is a long rod or stick that rests on a point called a fulcrum. When you apply force to one end, it reduces the effort needed to lift an object on the other end of the lever. In this experiment ...