1.

A person is standing on a platform rotating with an angular speed of rps. With streched hands carrying weights On drqwing his close to the body the M.I. of the system changes from 8 "kgm"^(2) to "4kgm"^(2) The increase in his energy nearly is

Answer»

320 J
40 J
80 J
160 J

Answer :D


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