Kinetic energy available on shaft carrying 69 kg fan rotating at 300rpm

a fan having diameter of 1575mm weighing 69 kg is mounted on a shaft of 60mm dia,24inches length and weighing 42kg. the fan is rotated by wind power and the shaft speed acquired is 300rpm. what is the kinetic energy available from this system to produce electricity?
shoaib
Asked May 24, 2013

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