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TBR Physics I page 210 #44
A person is on a rotating platform and extends his arms to increase by 3 times.
Since L = Iw, his angular velocity (w) decreases to 1/3 the original value.
Angular KE also decreases since
New KE = .5(3I) * (1/3)^2 = one-third of original KE
So where does this lost KE go? Does it go into angular PE?
A person is on a rotating platform and extends his arms to increase by 3 times.
Since L = Iw, his angular velocity (w) decreases to 1/3 the original value.
Angular KE also decreases since
New KE = .5(3I) * (1/3)^2 = one-third of original KE
So where does this lost KE go? Does it go into angular PE?