The initial length isn't really relevent for the experiment (only the extention is needed) and hence I didn't both. Measuring the original postion (against the ruler) of the band is not actually straightforward, since the mass hanger affects the measured postion of the band.
Hi there, i did Young's elastic modulus for my advanced higher Physics investigation, i used very similar equipment to what you used apart from i only used copper, tin and nickle. When you were putting more weight on the elastic band where you waiting for it to have stopped extending or did you just wait a certain amount of time :)?
The usual way to do the experiment is to wait a until the stretching stops. I didn't do this but instead added the weights at (roughly) regular time intervals. The reason for this was because I wanted to keep the video as "live" as possible, and highlight some particular features, such as hysteresis - the feature that the extensions when you remove the weights are not the same as those when you add the weights.
If you look at the extensions after removing the masses you will see that the elactis remains slightly stretched. This is called hysteresis. One of the consequences of this is that some of the elactis potential energy stored in the elastic is lost in the form of heat.
wait what's the ruler attached to? and great video very useful thanks
Trixstar10 1 year ago
It's stuck to the stand using sticky tape.
QuantumBoffin 1 year ago
@Trixstar10 The rule is just taped in place, to a clamp just out of video shot.
QuantumBoffin 11 months ago
Um I'm sorry what was the measurement for the elastic band before you put the weight's on?
Trixstar10 1 year ago
The initial length isn't really relevent for the experiment (only the extention is needed) and hence I didn't both. Measuring the original postion (against the ruler) of the band is not actually straightforward, since the mass hanger affects the measured postion of the band.
QuantumBoffin 1 year ago
thanx for posting!
reemsplaylist 1 year ago
Hi there, i did Young's elastic modulus for my advanced higher Physics investigation, i used very similar equipment to what you used apart from i only used copper, tin and nickle. When you were putting more weight on the elastic band where you waiting for it to have stopped extending or did you just wait a certain amount of time :)?
muirwilliam 1 year ago
The usual way to do the experiment is to wait a until the stretching stops. I didn't do this but instead added the weights at (roughly) regular time intervals. The reason for this was because I wanted to keep the video as "live" as possible, and highlight some particular features, such as hysteresis - the feature that the extensions when you remove the weights are not the same as those when you add the weights.
QuantumBoffin 1 year ago
can i ask how come you took the masses off at the end ?
labmusnahk 1 year ago
If you look at the extensions after removing the masses you will see that the elactis remains slightly stretched. This is called hysteresis. One of the consequences of this is that some of the elactis potential energy stored in the elastic is lost in the form of heat.
QuantumBoffin 1 year ago