Mr Lim asked us this question: Where is the center of gravity in a pendulum? Here's my answer: the center of gravity is located in the core of the pendulum. it's something like the earth, you have the core,mantle and the crust.the pendulum is like a small earth and the center of gravity works on earth too, so you don't fall off the earth, which is good.

This diagram shows where the center of gravity is:




this is just a small animation about 1 perioid of the pendulum:



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