Quick Release Linkage

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This linkage system can be used to slowly pull back on a cable connected to a spring or other elastic device and then suddenly release tension on the cable. As the wheel rotates, the pin is able to capture the first linkage bar (green). Notice that the second linkage bar (red) is raised above the first linkage bar and will never be captured by the pin. Slowly drag the slider to the end and watch the quick release.

Contributed by: John Albers (Department of Mathematical Sciences, Ball State University) (March 2011)
Open content licensed under CC BY-NC-SA



Snapshot 1: the linkage in its initial resting position

Snapshot 2: the linkage as the wheel has rotated approximately 180 degrees and has started to rest on the pin

Snapshot 3: the linkage as the wheel has rotated just under 360 degrees and is about to rapidly release away from the pin

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