Possible sources of error in compound pendulum experiment?

[ah4p]

completing my advanced higher physics investigation - measuring acceleration due to gravity
for the oscillating mass on a spring experiment

so far I have included friction between the nail & oscillating rod as a possible source of error

can anyone think of anything else?

thank you very much in advance

 

[berkeman]

completing my advanced higher physics investigation - measuring acceleration due to gravity
for the oscillating mass on a spring experiment

so far I have included friction between the nail & oscillating rod as a possible source of error

can anyone think of anything else?

thank you very much in advance

Welcome to the PF.

I can think of at least 2 more error sources. What do you think they are?

 

[ah4p]

Welcome to the PF.

I can think of at least 2 more error sources. What do you think they are?

well I've obviously included random uncertainties in all measurements, and calibration & scale reading errors in all equipment used eg. metre stick, timer

I also said sometimes the metre stick will follow a slightly elliptical path due to swaying

I can't think of any more though

tah again :)

 

[berkeman]

Not the two I was thinking of. What sources of loss can you think of...?

 

[vela]

completing my advanced higher physics investigation - measuring acceleration due to gravity
for the oscillating mass on a spring experiment

so far I have included friction between the nail & oscillating rod as a possible source of error

can anyone think of anything else?

thank you very much in advance

What exactly is the experiment here? What quantities are you measuring? How does the spring come into play?