Expressing Angular Momentum in Units

AI Thread Summary
Angular momentum can be expressed in units of kgm²·rad/s, which is a valid representation. It can also be expressed as N·m·s, and the radian unit can be omitted since it represents a ratio. The relationship between angular momentum and angular velocity is defined by the equation L = Iω. Kinetic energy can be calculated using the formula E = 1/2 Iω², with the moment of inertia I given by 1/2 MR². This confirms the compatibility of these units in angular momentum and kinetic energy calculations.
KiNGGeexD
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If the units of angular velocity, ω, is expressed in rad/a what then is the units of angular momentum?

L=Iω

From this I can gather that the units are

Kgm^2*rad/s

Is this a suitable way to express angular momentum?
 
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Yes you can express it as such. You can similarly express it N*m*s. You can sort of leave out the radian unit if you wish as that is basically a ratio of arc length to radius.
 
So if from that I calculated Kinetic energy using

E=1/2 I*ω^2

Where I=1/2MR^2
 
KiNGGeexD said:
So if from that I calculated Kinetic energy using

E=1/2 I*ω^2

Where I=1/2MR^2
Yes.
 
:) ok thanks
 
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