The flywheel effect is a concept in physics that refers to a heavy, rotating wheel that stores energy and can maintain its motion even when external forces are removed. In business, the flywheel effect is used to describe the momentum or success that occurs when a company is able to generate positive feedback and growth from its initial efforts. There are many synonyms for the flywheel effect, including momentum, multiplier effect, positive feedback loop, compounding effect, and virtuous cycle. All of these terms describe an ongoing process of growth and success that builds upon past successes and continues to generate positive outcomes over time.