How Levers Help Us
0.0/ 10 0 votes 1970-01-01 0h 11m 0 popularity
This instructional film shows the three parts of a lever and demonstrates how various levers help to move things more easily, or move them farther and faster.
This instructional film shows the three parts of a lever and demonstrates how various levers help to move things more easily, or move them farther and faster.
