Unformatted text preview: y direction. a) In unitvector notation, what is the particle's angular momentum about the origin? By definition, the angular momentum of the particle is l = r × m v =m(yv z zv y ) i + m(zv x xv z ) j + m(xv y yv x ) k = 96(kg · m 2 /s) j 48(kg · m 2 /s) k b) In unitvector notation, what is the rate at which the angular momentum is changing? According to Newton’s 2 nd law in angular form, the rate of change in the angular momentum of the particle is equal to the torque acting on the particle. d l /d t = τ = r × F =(yF z zF y ) i + (zF x xF z ) j + (xF y yF x ) k = 90(N · m) k...
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 Spring '08
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 Angular Momentum, Force, Mass, unitvector notation, Tomoyuki Nakayama

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