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# OCR Physics A G481 Mechanics - 17th May

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1. How did everybody find it?
2. Not too bad, apart from my mind went blank for the last question about turbines. -_-
3. (Original post by billybluehat)
I'm so confused i dont know whether ive done well or not! Did anyone make the radius 9.96 or something like that for the wind turbine question?
Yep I got 9.99 so rounded it up to 10 metres
4. yess! haha do you know if anyone will put up any answers at some point? im eager to know how ive done!
5. is there an unofficial markscheme? can someone please make one, i would but i cannot remember all the questions!
6. I'll post one up later - I've done the paper.
7. the acceleration downwards is horizontal component of g,because resultant force is horizontal component of weight. so g*sinθ=acceleration.we already got the acceleration from previous part.
8. Can someone make an unofficial markscheme please?
9. does anyone have unofficial mark scheme
10. (Original post by teachercol)
I'll post one up later - I've done the paper.
will you post it tonight or something???
11. is this the correct rule for sig figs (in OCR A-Level Physics exams):

Put your final answers to the same sig figs as the values given in the question are i.e. 10.0m(3sf) for the radius question because of the 1030 density (3sf)

Also, if the sf varies throughout given data, do you use largest sf or smallest that is given in question?

Thanks

Just started worrying about it as I suddenly realised I was not sure about the rule
12. (Original post by oh_1993)
is this the correct rule for sig figs (in OCR A-Level Physics exams):

Put your final answers to the same sig figs as the values given in the question are i.e. 10.0m(3sf) for the radius question because of the 1030 density (3sf)

Also, if the sf varies throughout given data, do you use largest sf or smallest that is given in question?

Thanks

Just started worrying about it as I suddenly realised I was not sure about the rule
When looking at past mark schemes I don't think they take marks off you if you have the right answer I don't see why they would also in mark schemes they seem to give a few answers to different s.f so it should be ok
13. Doesn't sound like I did too good. People keep mentioning figures that don't ring any bells to me..
I got a C the first time round so I may have to settle with that..
14. (Original post by HarryW95)
Doesn't sound like I did too good. People keep mentioning figures that don't ring any bells to me..
I got a C the first time round so I may have to settle with that..
Saaame with me , but i think i can improve on this one , defoo got c , probs b , but certainly not a...
15. Easy exam, all that revision paid off. That D i got in january scared me into me having no social life and just revising lol. But yeh, the exam was really good, dont think i dropped many marks at all
16. (Original post by patterson)
will you post it tonight or something???
Here it is

http://www.thestudentroom.co.uk/show...2#post37614962
17. (Original post by etta)
When looking at past mark schemes I don't think they take marks off you if you have the right answer I don't see why they would also in mark schemes they seem to give a few answers to different s.f so it should be ok
Yes, I think the sf in mark schemes vary because of the sf given in the questions. They only take off 1 mark in the whole paper though for being too accurate apparently.
18. Does anyone have the paper? The G481 May 2012 paper??? If anyone can get a hold of it...I love you
19. (Original post by samiwami)
Does anyone have the paper? The G481 May 2012 paper??? If anyone can get a hold of it...I love you
(Original post by oh_1993)
Yes, I think the sf in mark schemes vary because of the sf given in the questions. They only take off 1 mark in the whole paper though for being too accurate apparently.
(Original post by pcforster)
Easy exam, all that revision paid off. That D i got in january scared me into me having no social life and just revising lol. But yeh, the exam was really good, dont think i dropped many marks at all
(Original post by Opasniipocik)
Saaame with me , but i think i can improve on this one , defoo got c , probs b , but certainly not a...
(Original post by HarryW95)
Doesn't sound like I did too good. People keep mentioning figures that don't ring any bells to me..
I got a C the first time round so I may have to settle with that..
(Original post by etta)
When looking at past mark schemes I don't think they take marks off you if you have the right answer I don't see why they would also in mark schemes they seem to give a few answers to different s.f so it should be ok
(Original post by oh_1993)
is this the correct rule for sig figs (in OCR A-Level Physics exams):

Put your final answers to the same sig figs as the values given in the question are i.e. 10.0m(3sf) for the radius question because of the 1030 density (3sf)

Also, if the sf varies throughout given data, do you use largest sf or smallest that is given in question?

Thanks

Just started worrying about it as I suddenly realised I was not sure about the rule
(Original post by patterson)
will you post it tonight or something???
(Original post by direct99)
does anyone have unofficial mark scheme
(Original post by r_nws)
Can someone make an unofficial markscheme please?
(Original post by Eric_lee)
the acceleration downwards is horizontal component of g,because resultant force is horizontal component of weight. so g*sinθ=acceleration.we already got the acceleration from previous part.
(Original post by teachercol)
I'll post one up later - I've done the paper.
(Original post by emah123)
is there an unofficial markscheme? can someone please make one, i would but i cannot remember all the questions!
(Original post by billybluehat)
yess! haha do you know if anyone will put up any answers at some point? im eager to know how ive done!
(Original post by omar1995)
Yep I got 9.99 so rounded it up to 10 metres
(Original post by Joseppea)
Not too bad, apart from my mind went blank for the last question about turbines. -_-
(Original post by HarryW95)
How did everybody find it?
do any of you lot have any revision notes can you please PM them to me thank you
20. Does anyone have the 2014 mechanics paper that they could PM me?

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