Problem 15: Rebounding Capsule

A spherical ball dropped onto a hard surface will never rebound to the release height, even if it has an initial spin. A capsule-shaped object (i.e. Tic Tac mint) on the other
hand may exceed the initial height. Investigate this phenomenon.”

I. Phenomenon Demonstration

II. Books, Encyclopedia, Discussion and Forum Posts

III. Research Papers

  • Bharadwaj, R., Smith, C., & Hancock, B. C. (2010). The coefficient of restitution of some pharmaceutical tablets/compacts. International Journal of Pharmaceutics, 402(1-2), 50–56. doi:10.1016/j.ijpharm.2010.09.018
  • Hastie, D. B. (2013). Experimental measurement of the coefficient of restitution of irregular shaped particles impacting on horizontal surfaces. Chemical Engineering Science, 101, 828–836. doi:10.1016/j.ces.2013.07.010
  • Cross, R. (2010). Bounce of an oval shaped football. Sports Technology, 3(3), 168–180. doi:10.1080/19346182.2011.564283
  • Cross, R. (2006). The fall and bounce of pencils and other elongated objects. American Journal of Physics, 74(1), 26–30. doi:10.1119/1.2121752