Problem

Rotational kinetic energy Water turbine A Verdant Power water turbi...

Rotational kinetic energy

Water turbine A Verdant Power water turbine (a “windmill” in water) turns in the East River near New York City. Its propeller is 2.5 m in radius and spins at 32 rpm when in water that is moving at 2.0 m/s. The rotational inertia of the propeller is approximately 3.0 kg . m2. Determine the kinetic energy of the turbine and the electric energy in joules that it could provide in 1 day if it is 100% efficient at converting its kinetic energy into electric energy.

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