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Unformatted text preview: and by rotation about its CG. Let’s list the translational and rotational quantities and laws that are counterparts of each other: Translational Rotational velocity ( v ) rotational velocity ( ω ) ( m/s ) (rpm, 1 /s ) acceleration ( a ) rotational acceleration ( α ) ( m/s 2 ) (rpm/ s , 1 /s 2 ) mass ( m ) rotational inertia ( I ) ( kg ) ( kg * m 2 ) Force ( F ) Torque ( Γ ) ( N ) ( N * m ) ( note: not joules; joules are reserved for energy only .) Momentum ( p ) Angular Momentum ( L ) kg * m/s kg * m 2 /s K.E. (trans) = 1 2 Mv 2 K.E. (rot) = 1 2 Iα 2 (joules) ( J ) (joules) ( J ) Newton’s Second Law F = m a Γ = Iα p is conserved L is conserved 2...
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 Spring '08
 Staff
 Physics, Force, Mass, Moment Of Inertia, SAR Physics

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