# Experimental error

1. Mar 5, 2006

### blimkie

hi all
im doing a lab on the atwoods machine basically i ahve calulated gravity as eqaul to 7.09 m/s^2 so i am way off because tis really 9.81. its because of human error when i was using the stop watch.
i cant rember the formula for figuring out the perecentage of error even tho its really simple lol:rofl:
its sumthing like 9.81 - 7. 09 then u multply or divive to get ur percentage
haha thanks

2. Mar 5, 2006

### ranger

Dont forget to take the absolute value of the numerator.

Last edited: Mar 5, 2006
3. Mar 5, 2006

thanks alot