Abstract
The wear of coins in circulation is mathematically examined. It is assumed that high points on the coin surface wear at a greater rate than low points. Based on this hypothesis, deterministic and stochastic differential equation models for the dynamical wear of coins in circulation are derived from physical principles. The mathematical models are solved and compared. The models agree with and explain the actual weight loss behavior of coins in circulation. As an application of the models, a quantitative parameter of coin condition is studied.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
