Join TSR now and get all your revision questions answeredSign up now

AQA A2 Mathematics MM2B Mechanics 2 - Monday 22nd June 2015 [Exam Discussion Thread] Watch

    Offline

    3
    ReputationRep:
    (Original post by Lau14)
    12th, 15th, 16th, 18th, 22nd :/ so after S2 tomorrow morning I'll be focusing on unit 5 chem and FP2 until Monday/Tuesday pretty much, with some reading for PHYA5 hopefully to spread the load out. Wednesday will be entirely PHYA5 focused because I haven't done much for a while, and then I have three days (and only three remaining papers) to prepare for M2!
    You have STEP II on the 17th don't you?
    Offline

    10
    ReputationRep:
    (Original post by morgan8002)
    You have STEP II on the 17th don't you?
    No? I have a physics offer for Oxford, no STEP for me fortunately!
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by Lau14)
    12th, 15th, 16th, 18th, 22nd :/ so after S2 tomorrow morning I'll be focusing on unit 5 chem and FP2 until Monday/Tuesday pretty much, with some reading for PHYA5 hopefully to spread the load out. Wednesday will be entirely PHYA5 focused because I haven't done much for a while, and then I have three days (and only three remaining papers) to prepare for M2!
    Good luck!


    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    (Original post by Lau14)
    No? I have a physics offer for Oxford, no STEP for me fortunately!
    For some reason I thought you were taking it. Good luck in your A-levels anyway.
    Offline

    10
    ReputationRep:
    (Original post by morgan8002)
    For some reason I thought you were taking it. Good luck in your A-levels anyway.
    Having watched one of my friends worrying about it I'm quite glad I don't! Good luck to you too
    • Thread Starter
    Offline

    3
    ReputationRep:
    Might sound really basic but could someone draw out what Q4 (d) is doing in the mark scheme for January 2011?

    It takes moments about PR but I wasn't sure how it gets the distances it uses. I've done the question correctly all bar that sub question.


    Posted from TSR Mobile
    • Thread Starter
    Offline

    3
    ReputationRep:
    Can someone enlighten me as to where the mark scheme has got this weird \frac{1}{4} t^4 term from?

    June 2011 question 3(d);

    Name:  ImageUploadedByStudent Room1434275945.903484.jpg
Views: 108
Size:  119.7 KB


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by CD223)
    Can someone enlighten me as to where the mark scheme has got this weird \frac{1}{4} t^4 term from?

    June 2011 question 3(d);

    Name:  ImageUploadedByStudent Room1434275945.903484.jpg
Views: 108
Size:  119.7 KB


    Posted from TSR Mobile
    I assume it's a mistake on the markscheme you've got the online one says the correct answer http://filestore.aqa.org.uk/subjects...W-MS-JUN11.PDF
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by Shadez)
    I assume it's a mistake on the markscheme you've got the online one says the correct answer http://filestore.aqa.org.uk/subjects...W-MS-JUN11.PDF
    What the 😂

    Thank you! I don't understand what version mine is then!

    Do you understand Q4(d) January 2011?


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by CD223)
    What the 😂

    Thank you! I don't understand what version mine is then!

    Do you understand Q4(d) January 2011?


    Posted from TSR Mobile
    Having a go at it now but don't expect an answer I'm rubbish at centre of mass questions
    Offline

    2
    ReputationRep:
    CD223


    taking moments about line PR with clockwise motion being positive. So the distance of B from line PR is 30 cm and the mass is m and you also take into consideration the triangle the centre of its mass from the line PR is 20 (30-10) and multply it by its mass 4. so you end up with 30m-20*4=0 and so m=8/3
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by Shadez)
    CD223


    taking moments about line PR with clockwise motion being positive. So the distance of B from line PR is 30 cm and the mass is m and you also take into consideration the triangle the centre of its mass from the line PR is 20 (30-10) and multply it by its mass 4. so you end up with 30m-20*4=0 and so m=8/3
    Did you discard the rectangle because it's centre of mass lies along PR?

    I can understand your way now, but I was attempting to do it using the effective centre of mass of the whole lamina - of mass 9kg.

    Do you just take the horizontal distance from PR to the centre of mass of the lamina? 80/9?


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by CD223)
    Did you discard the rectangle because it's centre of mass lies along PR?

    I can understand your way now, but I was attempting to do it using the effective centre of mass of the whole lamina - of mass 9kg.

    Do you just take the horizontal distance from PR to the centre of mass of the lamina? 80/9?
    Yes I did since you're taking moments about the line PR the mass that lies there doesn't affect it.

    Yes and then don't forget to multiply it by 9
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by Shadez)
    Yes I did since you're taking moments about the line PR the mass that lies there doesn't affect it.

    Yes and then don't forget to multiply it by 9
    Cool - thanks!

    How are you finding M2? What grade are you aiming for overall?


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by CD223)
    Cool - thanks!

    How are you finding M2? What grade are you aiming for overall?


    Posted from TSR Mobile
    It's going well but I still get caught out by the tricky questions. I'm only doing AS FM so I'm going for the A grade.
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by Shadez)
    It's going well but I still get caught out by the tricky questions. I'm only doing AS FM so I'm going for the A grade.
    Yeah it's easy to lose so many marks on the last couple of questions.

    Nice! I'm A2 so hoping for an A* in A2 maths overall but Core 4 was tough this year so I don't think I will have done enough 😐


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by CD223)
    Yeah it's easy to lose so many marks on the last couple of questions.

    Nice! I'm A2 so hoping for an A* in A2 maths overall but Core 4 was tough this year so I don't think I will have done enough 😐


    Posted from TSR Mobile
    Good luck in getting your A* may the grade boundaries be ever in your favor
    Ah I've already done A2 I'm just picking up further maths as an extra qualification in my gap year. Core 4 was tough when I did it too, it seems most exams have increased in difficulty compared to the previous years
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by Shadez)
    Good luck in getting your A* may the grade boundaries be ever in your favor
    Ah I've already done A2 I'm just picking up further maths as an extra qualification in my gap year. Core 4 was tough when I did it too, it seems most exams have increased in difficulty compared to the previous years
    Thanks! Oh I see! Are you off to uni this September?

    Thanks! Core 3 went really well but not everyone thought so, so I'm hoping for as close to 100 in that as possible to make up for a lower Core 4 score!


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by CD223)
    Thanks! Oh I see! Are you off to uni this September?

    Thanks! Core 3 went really well but not everyone thought so, so I'm hoping for as close to 100 in that as possible to make up for a lower Core 4 score!


    Posted from TSR Mobile
    Hopefully if I improve my grade from the resit in F324 (chem4) then I will be!
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by Shadez)
    Hopefully if I improve my grade from the resit in F324 (chem4) then I will be!
    I heard that was a tough paper!


    Posted from TSR Mobile
 
 
 
Poll
Which web browser do you use?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.