ocr: To - make the gibbon swing faster you must make the legs bend when it is in the lowest position while swinging from an arm and extend them again at the highest point of the swing, or when the gibbon is flying unsupported throu gh the air, between handholds. This works because of the principle of conservation of angular momentum. This principle tells us that if the gibbon pulls its legs up nearer to the support, while it T - is swinging from an arm, it must swing faster. The same principle explains why an ice skater, spinning on one toe, spins faster when she draws her arms in to hersides and m ...
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