viernes, 20 de octubre de 2017
jueves, 19 de octubre de 2017
Levers are a simple machine that help us make work easier. But how do
they work and how can you make one to help you? Check out this episode
with Squeaks and Jessi to learn all about levers!
Simple machines have been helping people to do work for thousands of years!
The lever, wheel and axle, pulley, inclined plane, wedge, and screw each have
a job to do. Some amplify force, some change its direction, and some reduce
friction or create mechanical advantage.