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# M2 Elasticity watch

1. I was unsure what the 2 values of extension on part b actually meant?
I've attached my working for a and b.

I was stuck on c earlier but it's now solved (so you can ignore that picture)
Attached Images

2. (Original post by pippabethan)
I was unsure what the 2 values of extension on part b actually meant?
I've attached my working for a and b.

I was stuck on c earlier but it's now solved (so you can ignore that picture)
Why TeeEm gone? :/ no more tagging him ;(

Student403 Zacken @anyone else who can help
3. I'm so braindead right now so I can't help right now sorry
4. (Original post by pippabethan)
I was unsure what the 2 values of extension on part b actually meant?
The e= -0.6 is your original starting position.

And e=0.4 refers to the new position.

Note that e would not necessarily have been positive, although it is in this case.

I would do it with e being below B, i.e. assume it is a positive extension. The resulting quadratic I get has 0.6 and -0.4 as the two solutions. 0.6 being the starting position, and -0.4 being the desired position. Negative implies it's above B. And new length is original length plus extension = 1 + (-0.4) = 0.6 as desired.

Edit: As you have it, you have a positive quantity in a negative direction, which can be confusing.
5. (Original post by thefatone)
Why TeeEm gone? :/ no more tagging him ;(

Student403 Zacken @anyone else who can help
You want help with mech, tag ghostwalker.
6. (Original post by Zacken)
You want help with mech, tag ghostwalker.
Best not - I'm not going to be as active as I was, and there are others on here with more extensive mechanics experience.

Edit: But thanks for the thought.
7. (Original post by Zacken)
You want help with mech, tag ghostwalker.
did you study stats or mechanics in school? or little bit of both?
8. (Original post by thefatone)
did you study stats or mechanics in school? or little bit of both?
I am studying stats and mech, on my own, though. I'm doing S1-3, M1-3.
9. (Original post by Zacken)
I am studying stats and mech, on my own, though. I'm doing S1-3, M1-3.
o.o i wish i could be like you :/
10. (Original post by thefatone)
o.o i wish i could be like you :/
You really don't.
11. (Original post by thefatone)
o.o i wish i could be like you :/
**Replace the word "cat" with "Zacken"

12. (Original post by Student403)
**Replace the word "cat" with "Zacken"
You calling me a pussy?
13. (Original post by Zacken)
You calling me a pussy?
I don't think everybody wants to be a pussy
14. (Original post by Zacken)
You really don't.
hmmm :/ i'd like to know a bit of both though...
15. (Original post by thefatone)
hmmm :/ i'd like to know a bit of both though...
So self-study.
16. (Original post by Zacken)
So self-study.
i dunno though i might if i have spare time to do so .... atm i'm really bad at chem and even worse at physics so i gotta get those up to scratch first :/
17. (Original post by ghostwalker)
Best not - I'm not going to be as active as I was, and there are others on here with more extensive mechanics experience.

Edit: But thanks for the thought.
Sorry to hear you won't be as active - I wondered why had hadn't seen your name for a while. So I would just like to thank you for all the replies you have made to my mechanics posts through the years. I eventually got as far as 1/2 way through edexcel M3 but I think I've reached my limit but I do continuue look at mechanics posts.

Enjoy whatever you will be doing instead of TSR.
18. (Original post by maggiehodgson)
Sorry to hear you won't be as active
I'll still be around, for now, at least.

So I would just like to thank you for all the replies you have made to my mechanics posts through the years.
You're welcome.

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