A 2.0 kg cat (not shown) is on the outer radius (R2) of a ring that can rotate about its center like a merry-go-round. R1=0.80 m R2=0.40 m and the ring's mass is 8.00 kg. The ring is originally rotating at 13.2 rad/s. By how much does the cat increase the kinetic energy of the cat-ring system if the cat crawls to the inner radius (R1).

A 2.0 kg cat (not shown) is on the outer radius (R2) of a ring that can rotate about its center like a merry-go-round. R1=0.80 m R2=0.40 m and the ring's mass is 8.00 kg. The ring is originally rotating at 13.2 rad/s. By how much does the cat increase the kinetic energy of the cat-ring system if the cat crawls to the inner radius (R1).

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