Phy AS HELP!

[Saturation]

http://www.xtremepapers.me/CIE/Internat ... 9_qp_2.pdf

Varient 1. QUESTION 4(b)

What i dont get is how is it 0.5e for the second arrangement!

Doesnt each spring extend by 0.5e? Since they are asking for the TOTAL extension, don't we add them?

 

[Dummy36]

man listen.....for 1 spring the extension is e.....right???so if u connect 2 springs in parallel extension decreses by half...
if u connect 4 springs extension becomes 1/4....... got it???..
:Bravo:

to be or not to be.....it is the question...

 

[Saturation]

thanks, but i don't really get it! :/

I thought each spring extends by 0.5e, so the TOTAL extension is 0.5e + 0.5e ?
Am I interpreting the question wrong?

 

[libra94]

hope this helps!

 

[Saturation]

Thanks for the diagram and all, but my qs is:

how is the TOTAL e in number 2, 0.5e ?

Isn't the extension in EACH spring 0.5e ? That would give 0.5e + 0.5e = e

 

[trueblue11]

wow...the diagram is really...artistic....lol
anyway, it helped

 

[libra94]

Thanks for the diagram and all, but my qs is:

how is the TOTAL e in number 2, 0.5e ?

Isn't the extension in EACH spring 0.5e ? That would give 0.5e + 0.5e = e

the load is divided in each spring, thats why each of them will extend by 0.5 e
the springs are connected in parallel, so the total extension will be 0.5 as they are stretching TOGETHER!
they dont want the total extension of each spring, they want the total extension of the arrrangement!!! so it'll be 0.5

 

[libra94]

wow...the diagram is really...artistic....lol
anyway, it helped

hehe my point was to clear the confusion in ur head and im sure enough thatt i did that

 

[workinghard]

@libra94 dis is cute actually.... hahahahah... i lov it personally
n atbout ques
u jst rmbr da rule dat in capacitance n extension question da wy 2 slv dem is inverse of how u solve current ques
as in series u take frac n in parallel u add dem up
does this help?!
this is al ma tchr ever taught me... lolx