How Levers Help Us
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.
Average Score : 0
Status: Released
Release Date: 1970-01-01
Geners Documentary
Production Companies Coronet Films
Production Countries United States of America,
Run time: 11 minutes
Budget: --
Revenue: --
Cast
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