It has been proposed that large flywheels could be used to store energy Consider a flywheel made of concrete (density 2300 kg m 3 ) in the shape of a solid disk, with a radius of 10 m and a thickness of 2 0 m If its rotational kinetic energy is 100 MJ (1 0 10 8 J), what is the angular velocity of the flywheel

Question: It has been proposed that large flywheels could be used to store energy. Consider a flywheel made of concrete (density 2300 kg/m 3 ) in

It has been proposed that large flywheels could be used to store energy. Consider a flywheel made of concrete (density 2300 kg/m³) in the shape of a solid disk, with a radius of 10 m and a thickness of 2.0 m. If its rotational kinetic energy is 100 MJ (1.0 × 10⁸ J), what is the angular velocity of the flywheel?

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