Round 2: Tossup 11

If this statement holds, the standalone M1, M2, and M3 terms on the right-hand sides of Euler’s equations all vanish to zero. Universally, this statement is implied by the fact that all four fundamental forces are central forces. Precession that is not “induced” (-5[1])by a force occurs because this statement holds while the direction of omega changes. Isaac Newton showed that this statement implies orbits sweep out equal (*) areas in equal times in his proof of (-5[1])Kepler’s second law. This statement, which holds for systems with no net external torque, explains why ice skaters spin faster upon (-5[1])drawing (10[1])in their arms. For 10 points, name this law stating that the quantity “I omega” stays constant. (0[1])■END■ (0[1])

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