Wednesday

April 16, 2014

April 16, 2014

Posted by **Mary** on Wednesday, March 14, 2007 at 1:48am.

(0.104667 x -2.7) / (80 x 60)=

-0.000058875

[270 rev/min* 2 pi rad/rev* 1/60 min/sec]/(4800 sec) = 5.89*10^-3 rad/sec^2

You forgot the 10^2 multiplier on the rpms.

drwls the system is telling me the answer is incorrect. I saw where my I made the mistake and corrected it but it is still wrong. The answer I came up with is -0.00589 rad/sec^2.

You are right about the minus sign, since it is decelerating. Maybe they want you to use only two significant figures (-5.9*10^-3). Other than that, I don't see why it is getting marked wrong.

- Physics- drwls please help -
**Amber**, Wednesday, July 16, 2008 at 3:09pmI had this prob with different numbers. it wants the answer in scientific notation. mine was 6.5E-3

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