A verdant power water turbine a windmill in water turns in, Ask an Expert

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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 kgxm2.

Part A. Determine the kinetic energy of the turbine in joules.

Part B. Determine 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. Assume that the energy delivered per revolution is equal to the rotational kinetic energy of the turbine.

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