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Here’s a fun one to try. Take out your calculator. Now use it to take the square root of 9.8 (remember that g = 9.8 Newtons per kilogram). What do you get? SPOILER ALERT — it’s 3.13 something. Yes, that’s pretty close to the value of pi. Is it a coincidence? NOPE. But why? Why is the square root of g approximately pi? Let’s start with g. Although it’s often called “the acceleration due to gravity”, it’s actually the magnitude of the local gravitational field. It has a value of 9.8 Newtons per...