An interesting and tricky topic in rotational dynamics is the friction acting on an object that is rolling without slipping. Lessons on friction and rolling without slipping can also lend themselves to discussions on sweet spots, which are often approached through the center of percussion or vibration nodes.
References
1.
R.
Cross
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,” Am. J. Phys.
66
, 772
(Sept.
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D. C.
Giancoli
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, 4th ed. (Pearson/Prentice Hall, Upper Saddle River
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.3.
R.
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,” Phys. Teach.
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R. A.
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and J. W.
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, 9th ed. (Brooks/Cole/Cengage Learning
, Boston, MA
, 2014
), p. 333
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