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- Dictionaryflywheel/ˈflʌɪwiːl/
noun
- 1. a heavy revolving wheel in a machine which is used to increase the machine's momentum and thereby provide greater stability or a reserve of available power.
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noun
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A flywheel is a mechanical device that uses the conservation of angular momentum to store rotational energy, a form of kinetic energy proportional to the product of its moment of inertia and the square of its rotational speed. In particular, assuming the flywheel's moment of inertia is constant (i.e., a flywheel with fixed mass and second moment of area revolving about some fixed axis) then the st... Wikipedia