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Veritasium
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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.
Chain drop experiment
This video demonstrates how two masses, one free-falling and the other falling but attached to a chain, accelerate at different rates. Students are asked to make a prediction.
Slow motion video shows that the mass attached to the chain accelerates faster than the free-falling mass. This because as the chain continuously decelerates and stops, this pulls down on the mass and this increases the acceleration on this mass (equal but opposite forces apply).
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