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Posers and Puzzles

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Does anyone know the US customary units for angular momentum? An online assignment is being a real pain in my a$$.

Eric

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Originally posted by joe shmo
Does anyone know the US customary units for angular momentum? An online assignment is being a real pain in my a$$.

Eric
Nevermind, it was trying to tell me that I was using a mixture of SI and US customary values within the calculation, not that the units on the answer were wrong.......woops😳

Yet another reason for me to dislike online assignments.

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I usually consult Wikipedia for such information at work. Most of the mathematics and physics entries are very infirmative and reliable.

http://en.wikipedia.org/wiki/Angular_momentum

I try to stick with SI units everywhere, and certainly don't touch imperial units like feet, pounds and knots. Having said that though, I only really understand the size of angles in degrees, my head doesn't yet think in fractions of a radian sadly.

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Originally posted by iamatiger
I usually consult Wikipedia for such information at work. Most of the mathematics and physics entries are very infirmative and reliable.

http://en.wikipedia.org/wiki/Angular_momentum

I try to stick with SI units everywhere, and certainly don't touch imperial units like feet, pounds and knots. Having said that though, I only really understand the size of angles in degrees, my head doesn't yet think in fractions of a radian sadly.
Yeah, like just how big is a half radian?🙂

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Originally posted by iamatiger
I usually consult Wikipedia for such information at work. Most of the mathematics and physics entries are very infirmative and reliable.

http://en.wikipedia.org/wiki/Angular_momentum

I try to stick with SI units everywhere, and certainly don't touch imperial units like feet, pounds and knots. Having said that though, I only really understand the size of angles in degrees, my head doesn't yet think in fractions of a radian sadly.
The radian is a unit of plane angle, equal to 180/pi degrees, or about 57.2958 degrees.

http://en.wikipedia.org/wiki/Radian

You can convert directly from radians to degrees and vice versa.

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Originally posted by sonhouse
Yeah, like just how big is a half radian?🙂
90/pi degrees

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Originally posted by AThousandYoung
The radian is a unit of plane angle, equal to 180/pi degrees, or about 57.2958 degrees.

http://en.wikipedia.org/wiki/Radian

You can convert directly from radians to degrees and vice versa.
Yeah, if I have to estimate with radians, I usually just round pi to 3 for any in-my-head calculations and adjust it by about 5% later.

1 radian ~= 60 degrees is pretty good for estimation purposes. If you do the 5% adjustment, it brings you within 1% of the correct answer.