Assertion: flywheel's axis | /r/HasProperty | strong
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text: I think what was meant, was that if you had two flywheels, spinning in opposite directions, attached to the same axis/axle, spinning at the same speeds, they would cancel each other out externally as long as the axis is strong enough, but when the axle was rotated, the two flywheels might try to bend the axle in the middle?