Pendulum Practical - Reliability and Validity (1 Viewer)

[velox]

I know this has been asked 1000 times, but this question hasnt really been answered in the threads that i have read. In our conclusion, for reliability would we just talk about how its been repeated and factors that could affect the value of g, such as depth of earths crust, errors etc?

And for validity what would we say?

Thanks

 

[rama_v]

I know this has been asked 1000 times, but this question hasnt really been answered in the threads that i have read. In our conclusion, for reliability would we just talk about how its been repeated and factors that could affect the value of g, such as depth of earths crust, errors etc?

And for validity what would we say?

Thanks

Yeah obviosuly for reliability u simply repeat the experiment and graph a line of best fit of your results. (See a past hsc paper, where they graph t^2 vs L i think). This makes it a more accurate result. Obviously the timing would not be exact so that detracts from the accuracy of the experiment adn hence makes it less valid.