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workin_daily
Group Title
Ok, this is quite a big one.. I just need to know what formulas to use for certain parts of the question:
Matty the moth is on a turntable spinning at (2 3/8) rotations in 8 seconds. Bob is 11cm away from the center.
A)Find the angular displacement of Bob.
B)Find the angular velocity in rads per second.
C)Find the distance that Bob traveled in 8 seconds.
D)Find the linear velocity of Bob in cm per second.
 2 years ago
 2 years ago
workin_daily Group Title
Ok, this is quite a big one.. I just need to know what formulas to use for certain parts of the question: Matty the moth is on a turntable spinning at (2 3/8) rotations in 8 seconds. Bob is 11cm away from the center. A)Find the angular displacement of Bob. B)Find the angular velocity in rads per second. C)Find the distance that Bob traveled in 8 seconds. D)Find the linear velocity of Bob in cm per second.
 2 years ago
 2 years ago

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workin_daily Group TitleBest ResponseYou've already chosen the best response.1
I already have the answers, just need the formulas and/or some examples of what to do  studying.
 2 years ago

moongazer Group TitleBest ResponseYou've already chosen the best response.1
\[\omega=\theta/t\] \[l=s/t\]
 2 years ago

moongazer Group TitleBest ResponseYou've already chosen the best response.1
w is the angular velocity. l is the linear velocity. s is the arc length you can also make another equation for l by using those formula \[s=\theta r\]
 2 years ago

moongazer Group TitleBest ResponseYou've already chosen the best response.1
so l is also \[l=\omega r\]
 2 years ago

workin_daily Group TitleBest ResponseYou've already chosen the best response.1
Thanks for the help
 2 years ago

moongazer Group TitleBest ResponseYou've already chosen the best response.1
also do not forget to convert revolutions (rev) to radians . theta should be in radians you can convert it by multiplying to 2pi
 2 years ago

workin_daily Group TitleBest ResponseYou've already chosen the best response.1
\[\theta=revs \times2\pi rads\] Correct?
 2 years ago

moongazer Group TitleBest ResponseYou've already chosen the best response.1
yes, do you know why it is correct ?
 2 years ago

workin_daily Group TitleBest ResponseYou've already chosen the best response.1
1rev = 2πrads
 2 years ago

moongazer Group TitleBest ResponseYou've already chosen the best response.1
correct :)
 2 years ago

workin_daily Group TitleBest ResponseYou've already chosen the best response.1
I guess i have been paying enough attention in trig haha, thanks again
 2 years ago

moongazer Group TitleBest ResponseYou've already chosen the best response.1
your'e welcome :)
 2 years ago
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