EXCLUSIVE: Shifting Gears star Kat Dennings reveals the sitcom's writers were "split into two camps" when it came to a "Riley ...

Let’s change gear to look at gears. Gears are also wheels attached to a fixed axle, but rather than a groove, they have little teeth that can slot together with other gear wheels. When one gear ...

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As there are teeth around the edge of the gears they grip together and so can withstand a greater force, enabling them to move large items such as cars or bicycles. However, the two gears can vary ...