Ramachandran, A.
(2018)
Middle school problems
understanding
circular motion.
At Right Angles, 7 (2).
pp. 117-120.
ISSN 2582-1873
Abstract
Here are some problems related to circular motion, along with their solutions and some extension activities.
Problem VII-2-M.1: On Coins and Plates
A. Coin Rolling Outside
(i) A coin (or disc) rolls around another similar coin held down
firmly, maintaining constant contact and without slipping.
After it has executed one turn around the fixed coin, how
many times has it turned around itself?
(ii) What if the fixed coin or disc was twice the size of the rolling
coin/disc?
(iii) Or n times the size?
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