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Circular Motion-When Will They Meet?

  • Thread starter gaimon
  • Start date
9
0
Here I am again...
Two people start at the same place and walk around a circular lake in opposite directions. One has an angular speed of 1.66E-3 rad/s, while the other has an angular speed of 3.24E-3 rad/s. How long will it be before they meet?

What I have done so far is to set 3.24t + 1.66t=2Pi

so t(4.9)=2Pi therefor t=1.282 s

or so I thought...problem is that it's wrong.
So then what am I doing wrong?
Any help is appreciated.
 

Answers and Replies

radou
Homework Helper
3,104
6
gaimon said:
Here I am again...
Two people start at the same place and walk around a circular lake in opposite directions. One has an angular speed of 1.66E-3 rad/s, while the other has an angular speed of 3.24E-3 rad/s. How long will it be before they meet?

What I have done so far is to set 3.24t + 1.66t=2Pi

so t(4.9)=2Pi therefor t=1.282 s

or so I thought...problem is that it's wrong.
So then what am I doing wrong?
Any help is appreciated.
Btw, where did the 'E-3' parts dissapear?
 
9
0
i thought that that was just notation
what does it really mean?
 
radou
Homework Helper
3,104
6
gaimon said:
i thought that that was just notation
what does it really mean?
1.66E-3 = [tex]1.66\cdot 10^{-3}[/tex]. It is usually written in text form as 1.66*10^-3, rather than 1.66E-3.
 
9
0
i can't believe that was all I had to do
been struggling for hours
Thank you so much!
 

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