The mass moment of inertia of the flywheel

asked Aug 15, 2017 in TOM by chandu (215k points)

A flywheel connected to a punching machine has to supply energy of 400 Nm while running at a mean angular speed of 20 rad/s. If the total fluctuation of speed is not to exceed ±2%, the mass moment of inertia of the flywheel in kg-m² is

(a) 25 (b) 50

(c) 100 (d) 125

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