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How does this tennis ball thrower for dogs work?

Asked by pallen123 (1514points) April 13th, 2014

I understand why a long augmentative arm extension could help to throw a ball (it’s leverage right?). But why does the flex in the plastic help? It seems that it springs a bit and that somehow helps to launch the ball farther. Why is that? It seems like a stiff extension ought to conserve all the energy from your arm better. Anyone understand the physics here?

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