IB Physics - Topic 6 - Resolving Tension and Centripetal Force

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Lots of students get turned around by the vectors and trigonometry involved in tension and centripetal force. In this incredible, shocking video, Mr. Van Loh simply explains the trigonometry and points out the most common mistake that IB Physics students make in their free body diagrams.
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Really appreciate the video, but I still have one concern. Are the lines (in a free body diagram) representing tension and weight supposed to be the same length even when their is acceleration? Which one is supposed to be longer?

ismaelgimenez
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