Why is an empty shampoo bottle so easy to knock over? (VIDEO)

Lehigh University

Caption

A Lehigh University professor, Jerome Licini, and first-year physics major Allen Zijun Yuan, demonstrate the physics behind this easily observed and annoying phenomenon using a tennis ball and a protractor.

Credit

Jerome Licini and Allen Zijun Yuan/Lehigh University

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Please credit Jerome Licini and Allen Zijun Yuan/Lehigh University

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