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by Dio_G on September 15th, 2011

Dio_G

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In a free fall kinematics experiment, should the margin of error for "g" be calculated as an error percentage or percentage of difference?

I'm thinking error percentage since it is compared to the real value of the acceleration (gravity) at 9.8 m/s. The % of difference only tells me the difference between the values I got in the multiple tries.

If I'm correct then my question is stupid. If not, then I misunderstood both concepts.

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Answers. 1 helpful answer below.

  • by WarHorseLeBron on September 15th, 2011

    WarHorseLeBron

    There is no universal value for g. In some locations, its higher than 9.81m/s². In some locations, its lower.

    If you are running an experiment to approximate g in your location, you should be mindful that g is determined in vacuum condtions.

    If there is a known value for g in your location and you want to compare it with your results, then you can find the percent error by using this formula.

    |Your result-Accepted value|/Accepted value X100

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