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World 5 · Advanced Compound Machines · 8 min · PRO

Winch into a Ramp Hoist

A wound winch feeds a rolling ramp

PRO · Simple Machines

World 5: Advanced Compound Machines is part of PRO

The first world of Simple Machines is free. PRO opens the other 32 lessons in 6 worlds — simulations, quizzes and all.

  • Gear Train into a Screw Jack
  • Lever into a Block and Tackle
  • Zero-force members
  • A stable truss with the fewest bars
  • Pratt, Howe or Warren?
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