Purpose: Learn to use a second class lever (a simple machine) to reduce the force required to lift a heavy object.
Overview: A lever is mage up of a long shaft or board that rests on a support called a fulcrum. The objec you are trying to move is called the load With a lever, either force is gained and distance is lost or distance is gained and force is lost.
Read more » We are No.2


Recent comments
Good tips! I really have to
Pumped for fantasy football
Great stuff!
Ha! so true
It's true, I am following on
very good recipe love it and
One of the great places on
I've been pounding away at my
Great stuff!
I bubble too!! Great stuff!