State the law of conservation of angular momentum. Write its two applications.
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The law of conservation of angular momentum states that angular momentum is conserved when there is zero net torque applied to a system, where the system is the object or objects that are rotating.
An example of conservation of angular momentum is seen in an ice skater executing a spin, as shown in. The net torque on her is very close to zero, because
1) there is relatively little friction between her skates and the ice,
2) the friction is exerted very close to the pivot.
Explanation:
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