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* can you create a hinge using thread and what are the limitations? | * can you create a hinge using thread and what are the limitations? | ||
* create a linkage that can draw interesting curves | * create a linkage that can draw interesting curves | ||
=== Links == | === Links === | ||
==== Levers ==== | ==== Levers ==== | ||
* [https://www.youtube.com/watch?v=YlYEi0PgG1g The mighty mathematics of the lever] | * [https://www.youtube.com/watch?v=YlYEi0PgG1g The mighty mathematics of the lever] | ||