The 9 dislikes were the people whose wire snapped and hit their eyes.

@djfish3099

3 жыл бұрын

@Matteo Zachariah I don't give 3 shits

@atrihegde1418

3 жыл бұрын

@@djfish3099 damn these bots have come a long way

Cheers mate helped a lot all these videos with these TAG assessments coming up

Isnt the length L from the fixed end at the G clamp right until the end of the wire? Just need to clarify please

Surely as you are stretching the wire, the cross-sectional area will get smaller? Wouldn't this throw off results, as another variable is changing?

@PhysicsOnline

7 жыл бұрын

Matt Whitelock You're right, the assumption we make is that this decrease is very small and can be ignored from our calculations for working out the stress.

@mattwhitelock4725

7 жыл бұрын

A Level Physics Online Ah okay, thank you that makes sense

Since YM= stress/strain could you not plot a graph of stress against strain, where the gradient is now the YM?

@Syiepherze

7 жыл бұрын

It's a lot simpler to do it that way. I guess it was just to show the relationships

@ghgjftrh8144

5 жыл бұрын

Because the stress (adjusted using the masses) will be the independent variable, and independent variables are usually plotted on the x-axis.

@boingk2585

2 жыл бұрын

@@ghgjftrh8144 force extension graphs are the exception tho

quality video as always :)

@PhysicsOnline

7 жыл бұрын

Thanks - more coming along soon.

@d0zm0s83

Жыл бұрын

Yes get it lad

Why do you use pi*D^2/4 and how does that differ from using PI*r^2

@PhysicsOnline

6 ай бұрын

It is the same - but I used the diameter in the equation as that’s what you actually measure.

Hi 👋 I just had a question, how would you calculate the percentage uncertainty in the force if you have multiple different forces that you are applying to the object? Secondly, once you work out the percentage uncertainty in the force, area, extension and original length, how can you calculate the percentage uncertainty in the Young Modulus altogether?

@boingk2585

2 жыл бұрын

Find the abs uncertainty for the masses (tbh this should be given) then use it to calculate the percent uncertainty. Even when you add more masses the percent uncertainty should remain the same since the masses are uniform

@boingk2585

2 жыл бұрын

And to work out ym uncertainty in percent, add the force, area, extension and length percent uncertainties together

@boingk2585

2 жыл бұрын

Probably not useful for you anymore lol

@anonymooseuser2150

2 жыл бұрын

@@boingk2585 cheers mate, it’s useful for me :)

@boingk2585

2 жыл бұрын

@@anonymooseuser2150 np 👍

why do you measure the young modulus for copper in this way and not in the same way as steel?

@69mo

Жыл бұрын

steel doesnt stretch (as easily)

mucho graciesas me amigo

how would you convert mm^2 to m when calculating the wire cross sectional area?

@Minecraftster148790

7 жыл бұрын

well mili = 10^-3, so 1 milimetre is 10^-3 metres. When that is squared the exponent doubles, so it would be 10^-6. So we take the value in milimetres and multiply by 10^-6

@zorossenseofdirection2698

4 жыл бұрын

Convert the number in the beginning to make them all into meters then work out the area

3:29 sir did you really need to say all that 😂😂😂 my eyes are feeling weird

WIIIIIRRRRRRRE ~ Jessie

turn on subtitles at 1:04 Edit: please like or comment when you see this so that I can revisit this clip😂

@amadif1793

2 жыл бұрын

lol

@AlokJadva

2 жыл бұрын

😂😂😂😂

@starrybubble3632

7 ай бұрын

I LAUGHED SO HARD MY ANUS FELL OUT 😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂🤣😂😂😂😂😂😂

Calculate the value of Young's modulus of Brass wire by hanging the weight 0g, 500g, 1000g. Perform the whole experiment in Uranus.

why does l have to be as long as possible you never said why

@Rahim103.5

Жыл бұрын

I think it’s so you can monitor as much extension as possible

@arronparkermiller

Жыл бұрын

It’s to reduce any uncertainties

@ascendedtree5876

4 ай бұрын

It reduces percentage uncertainty

@kingrobert7246

4 ай бұрын

I dont care anymore Im done with physics lol