What fraction of the original kinetic energy is lost

Reference no: EM13558157

A wheel with rotational inertia 1.27 kg m2 is rotationwith an angular speed of 824 rev/min on a shaft whose rotationalinertia is negligible. A second wheel, initially at rest andwith rotational inertia 4.85 kg m2, is suddenly coupledto the same shaft.

a) What is the angular speed of the resultant combination of theshaft and two wheels?

b) What fraction of the original kinetic energy is lost?

Reference no: EM13558157

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