Coriolis force: deflection of a falling particle

By how much does a falling particle deviate from a vertical trajectory due to the fictitious Coriolis force? Here's how we can derive an answer to this question, and how we can intuitively understand why the deflection occurs.

About me: I studied Physics at the University of Cambridge, then stayed on to get a PhD in Astronomy. During my PhD, I also spent four years teaching Physics undergraduates at the university. Now, I'm working as a private tutor, teaching Physics & Maths up to A Level standard.

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