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Unformatted text preview: Chapter 4
4.1 Angular Momentum 4.1.1 Deﬁnition of angular momentum 4.1.2 Angular momentum in an arbitrary direction 184.108.40.206 Solution angub-a Question: If the angular momentum in a given direction is a multiple of h = 1.054,57 10−34
J s, then h should have units of angular momentum. Verify that.
Answer: Angular momentum is linear momentum, (mass times velocity,) times normal distance from the axis. So its units are kg (m/s) m. Conversely J s is N m s and N, a Newton,
is kg m/s2 , so J s is kg m2 /s, the same as the units of h.
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