Simple Machines: Inclined Planes and Levers (Third Edition)
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Demonstrates the simple work formula--work = force x distance--and explains the principles that apply to such simple machines as planes, levers, and pulleys. Presents teenagers conducting experiments with first-class and second-class levers and learning to use the simple machines to reduce the force needed to complete a task.
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- 16mm Filmography (legacy record) — title, year, creator, length, format, color, description, catalog record
Original permalink · Record added 2024-04-22 20:41:45