Conservation of EnergyThe Dropper Popper and the Woodpecker Toy

View Full Description

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