Thu September 29, 2011 By:

if the angular momentum is conserved in a system whose moment of inertia is decreased, will rotational kinetic energy be conserved.

Expert Reply
Fri September 30, 2011
Kinetic energy and angular momentum are related as E = L2/2I, thus decreasing the moment of inertia and keeping L constant will increase the kinetic energy of rotation of the body.
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