Conservation of Energy

Conservation of EnergyThe Dropper Popper and the Woodpecker Toy

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Please watch the video-clips below and explain both experiments in terms of conservation of energy.

https://www.youtube.com/watch?v=D3Vn36YmNik

Note that the device (half of a rubber ball) seemingly defies the Law of Conservation of Energy by bouncing higher than where it was dropped from.

https://www.youtube.com/watch?v=s3YSnNAIHDg

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