[AQA] Mechanics 2 - 21 June 2012 - M2
Maths exam discussion - share revision tips in preparation for GCSE, A Level and other maths exams and discuss how they went afterwards.
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2Oh, nice setting out :P I normally do the paper mostly in my head, then restart the paper and write down my workings and neat followings while checking the answer matches a second time ^_^ It means I finish the paper in about 45 minutes and loads of time to check though my work... weird I know, but it works for me(Original post by Signed Solution)
I attempted all of part b) but judging from Xaerion's post I think it's correct.
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2Thanks. The setting out is all because of my amazing teacher(Original post by Xaerion)
Oh, nice setting out :P I normally do the paper mostly in my head, then restart the paper and write down my workings and neat followings while checking the answer matches a second time ^_^ It means I finish the paper in about 45 minutes and loads of time to check though my work... weird I know, but it works for me
But yeah that does seem a bit weird. Well, nothing wrong with what works lol. -
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2I did part b,i for this question yesterday for someone on page 1 :P(Original post by hihihihihi)
Can someone do question 8bi and ii from june 11 paper please
Here it is ^_^
bi) -
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2Anyone??? Theres a third part to the question which was more straight forward,
But can someone explain the the time that Q is in the air???? (and thanks for the help everyone, Im going through the questions well now, getting a good pace going)
Edit: I got it now.....you cant seem to resolve usng U=30, and S = -250, which is annoying. So you have to split it into two Suvat equations....Last edited by TheRenaissanceMan; 20-06-2012 at 22:24. -
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2Bleh, sick of M2 now. I've just about got the hang of it.
Going through past papers in 40-45 minutes and getting most right. Took me about 5 hours but I've finally understood the whole resultant force thing, I learned how to resolve =L.
Best of luck tomorrow guys :P. I'm off to sleep. Lots of cramming tomorrow morning I'm sure
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2Haha good luck mate! and good luck to the rest of you, wish me luck on OCR on Friday, such a productive day!(Original post by Iepnauy)
Bleh, sick of M2 now. I've just about got the hang of it.
Going through past papers in 40-45 minutes and getting most right. Took me about 5 hours but I've finally understood the whole resultant force thing, I learned how to resolve =L.
Best of luck tomorrow guys :P. I'm off to sleep. Lots of cramming tomorrow morning I'm sure
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2From the question and your answer to part a), you know the tension in the strings are 20N and 30.4N.(Original post by hihihihihi)
can someone help me on question 7bii june 2011 paper please
You can work out all the angles in the diagram simply.
This gives the tension of the 20N string to be 40 degrees above the horizontal and the tension of the 30.4N string to be 60 degrees above the horizontal.
The object P is moving in a horizontal circle. The speed is given as 5 metres per second.
Using
and 
, you have 
The resultant force is only made up of the two tensions. So, as P is moving in a horizontal circle, you resolve them horizontally and sub in the mass and velocity.
You then rearrange this for r and should get 3.28m
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2When resolving radially is it R-mgsinx or R+mgsinx and why?(Original post by Xaerion)
I did part b,i for this question yesterday for someone on page 1 :P
Here it is ^_^
bi)
Also why were you able to divide by m at the end? Surely that would then give you R/m and not R?
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2It depends if its above or below the centre of the circle(Original post by Marsters)
When resolving radially is it R-mgsinx or R+mgsinx and why?
Also why were you able to divide by m at the end? Surely that would then give you R/m and not R?
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2So if its above the centre of the circle then its R+mg and below is R-mg?(Original post by hihihihihi)
It depends if its above or below the centre of the circle -
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2Yeah use the diagram from post number 66 above.(Original post by Marsters)
So if its above the centre of the circle then its R+mg and below is R-mg?Last edited by hihihihihi; 21-06-2012 at 09:30. -
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Re: [AQA] Mechanics 2 - 21 June 2012 - M2I posted a picture a couple posts back which should explain it(Original post by Marsters)
So if its above the centre of the circle then its R+mg and below is R-mg?
