Can someone please show me how to do this step by step, I tried looking online but it's no help at all.
A turntable rotates at 42 revolutions per minute. What is its angular speed in radians per second?
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OpenStudy (anonymous):
ello
OpenStudy (anonymous):
hello
OpenStudy (snowfire):
First off, how many radians are in one revolution?
OpenStudy (anonymous):
5
OpenStudy (anonymous):
i think
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OpenStudy (snowfire):
5? It's actually just 2
OpenStudy (anonymous):
there's 2pi
OpenStudy (anonymous):
oh
OpenStudy (snowfire):
So this turntable rotates 42 times per minute, how many times is that in one second?
OpenStudy (anonymous):
60
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OpenStudy (anonymous):
60
OpenStudy (snowfire):
This specific turntable, not how many seconds are in a minute
OpenStudy (anonymous):
42 per 60 secs?
OpenStudy (snowfire):
Yes, so per 1 sec, how many?
OpenStudy (anonymous):
0.7
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OpenStudy (snowfire):
Sounds about right, so if there are 2 radians in a whole revolution, and this turntable rotates .7 times per second, how many radians is that per second?
OpenStudy (anonymous):
.7 x 2pi=?
OpenStudy (snowfire):
Yep, you got it
OpenStudy (anonymous):
So the answer would be 4.39822972
OpenStudy (snowfire):
No, divide by pi and that's how many radians.
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