Question

Example 1.7: A flywheel is a mechanical
device specifically designed to efficiently
store rotational energy. For a particular
machine it is in the form of a uniform 20 kg
disc of diameter 50 cm, able to rotate about
its own axis. Calculate its kinetic energy
when rotating at 1200 rpm. Use te ? = 10.
Calculate its moment of inertia, in case it is
rotated about a tangent in its plane.​

Answer 1

Answer:

Angular speed of the flywheel       w=30  rad/s

                Rotational kinetic energy      E=360J

Let the moment of inertia of the fly wheel be  I

Rotational kinetic energy       E=21Iw2

∴     360=21I×302          ⟹I=0.8 kg m2

Answer 2

Answer:

your answer is given above

Explanation:

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