Python Physics: What Causes the Tides and How Do You Model Them?

This is part of my classical mechanics series. You can find all my videos in the series in the following playlist. https://www.youtube.com/playlist?list=PLWFlMBumSLSYuuPFVlkXU4Jx6BbfpFzDf What causes the tides on Earth and how can you model them with python? Here is the code https://trinket.io/glowscript/dca4e41cfa10