Angular Momentum Problem of turntable

AI Thread Summary
The problem involves a cat walking on a wooden turntable, which has a mass three times that of the cat and is initially at rest. As the cat walks at a speed of 0.6 m/s, the principle of conservation of angular momentum applies, indicating that the angular momentum of the cat and the turntable must balance. The equation Iw (moment of inertia times angular velocity) for the cat equals the negative of Iw for the turntable. This relationship allows for the calculation of the turntable's angular velocity in response to the cat's movement. The discussion emphasizes the importance of understanding angular momentum in this scenario.
viper930
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This seems pretty basic but I am drawing a blank. Thanks in advance.

"A cat is sitting on the rim of a wooden turntable that is free to turn about a vertical axis. The turntable's mass is 3 times the cat's mass and is initially at rest. The cat then starts walking around the rim at a speed of 0.6m/s relative to the ground. How fast does the turntable's rim move relative to the ground?"
 
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conservation of angular momentum. Just like linear momentum, when two things push apart, mv of one object equals -mv of the other, in angular momentum, the Iw of one equals the -Iw of the other.
 

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