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Two ice-skaters, whose masses are 40 kg and 70 kg, hold hands and rotate about a...

Two ice-skaters, whose masses are 40 kg and 70 kg, hold hands and rotate about a vertical axis that passes between them, making one revolution in 1.5 s. Their centers of mass are separated by 1.7 m, and their center of mass is stationary. Model each skater as a point particle.

(a) Find the angular momentum of the system about it's center of mass.
1    308J·s

(b) Find the total kinetic energy of the system.
2    J

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