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Science and Engineering

Can You Predict Which Way This Gear Will Turn?

Changing your perspective is a useful approach in physics to make certain problems easier to solve. In a few past science problems, we've used a new perspective to change an impossible-looking problem into one that is much more intuitive.

This technique involves choosing a reference frame, a collection of things that are at rest with respect to each other. Picking the right reference frame is important with gear systems, particularly when the centers of some gears can move relative to one another.

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