This piece of apparatus consists of two swings suspended from a common support such that they swing in the same plane (i.e. towards/away from one another). The support is itself suspended from a fixed structure, and can pivot freely at both ends. All three pendulums are rigid. Step off the access ladder and chaos will ensue. Some interesting friendly / hostile strategies may also emerge.
-- EnochLives, Jan 10 2015

Adjustably_20couple...0playground_20swing [hippo, Jan 11 2015]

random, halfbakery