nth root

Alon Amit, PhD in Mathematics and Mathcircler, gives a fantastic answer to the following question: What is the practical usefulness of learning the Nth root of a number? My soon-to-be 7th grade son asked me: If I/we could think of good reasons for finding 2nd and 3rd root but not the Nth. Any good explanations? Alon relates his math to the piano and a bicycle wheel. Interested? Read the deal … Quora.
https://www.quora.com/What-is-the-practical-usefulness-of-learning-the-Nth-root-of-a-number