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# Edexcel M2/M3 June 6th/10th 2013 Watch

1. (Original post by •Ball•So•Hard•)
Fair play if you're being honest, you must be really bright, everyone admires your arrogance bro.
The majority of the questions were straight out of the book, if you didn't do well you clearly didn't do enough work and expected to pass, your fault.
2. The circular motion question was something like

x= (4t√15ag)/25

y=(3t
√15ag)/25 - (gt^2)/2
I used vectors for this part which made life a lot easier.

Also I remember the centre of mass question a bit,

the first part was 342/567 (completely made it up, it might be the other way around but something like this)
second part was some badass number ; 1821/2343 (again i made it up but it is similar to this, only 3th 4rd digits are wrong)

Also it was an easy paper. Questions were long but not challenging. Anybody posted an unofficial mark scheme?
3. (Original post by milliezhao)
for the first question was did it give 35 rev per minute? Im very scared that i read the question wrong
I am very sure it said 20 rpm but don't worry you would get a lot of method marks...
4. (Original post by thephysicsguy)
The circular motion question was something like

x= (4t√15ag)/25

y=(3t
√15ag)/25 - (gt^2)/2
I used vectors for this part which made life a lot easier.

Also I remember the centre of mass question a bit,

the first part was 342/567 (completely made it up, it might be the other way around but something like this)
second part was some badass number ; 1821/2343 (again i made it up but it is similar to this, only 3th 4rd digits are wrong)

Also it was an easy paper. Questions were long but not challenging. Anybody posted an unofficial mark scheme?
For those x and y equations, did you remember that they do not start at the origin? initial x position is -4a/5 and initial y is 3a/5
5. (Original post by miketree)
The majority of the questions were straight out of the book, if you didn't do well you clearly didn't do enough work and expected to pass, your fault.
Dude, I think I did do well, think I dropped about 3 marks. Fair enough if you didn't think it was hard, but I'd have hoped you were trolling when you tell people it was super easy
6. (Original post by miketree)
The majority of the questions were straight out of the book, if you didn't do well you clearly didn't do enough work and expected to pass, your fault.
Just because we're saying it was hard, that doesn't mean we expect to fail. I think I got around 71-73. I think people are saying that these types of questions are not in the book. If they are, please show me them
7. (Original post by thephysicsguy)
The circular motion question was something like

x= (4t√15ag)/25

y=(3t
√15ag)/25 - (gt^2)/2
I used vectors for this part which made life a lot easier.

Also I remember the centre of mass question a bit,

the first part was 342/567 (completely made it up, it might be the other way around but something like this)
second part was some badass number ; 1821/2343 (again i made it up but it is similar to this, only 3th 4rd digits are wrong)

Also it was an easy paper. Questions were long but not challenging. Anybody posted an unofficial mark scheme?
Hey I got the same but instead of simplifying it I just left it as x=-3/4√3ag/5 the minors because it is going left, but I think we need to add the horizontal distance from O when the string was slack?? Same for the y??

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8. (Original post by •Ball•So•Hard•)
Dude, I think I did do well, think I dropped about 3 marks. Fair enough if you didn't think it was hard, but I'd have hoped you were trolling when you tell people it was super easy
So you're telling me memorising from the book is hard?
9. guys i failed this exam really badly, i am crying, how can i get over this...my life is ruined
10. (Original post by thephysicsguy)
I am very sure it said 20 rpm but don't worry you would get a lot of method marks...
I might have remembered it wrong but I got 0.179 in the end did you get that?

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11. (Original post by xrpred)
Just because we're saying it was hard, that doesn't mean we expect to fail. I think I got around 71-73. I think people are saying that these types of questions are not in the book. If they are, please show me them
Once someone posts the paper so I can get the full details (because they're blurry in my mind right now) I will tell you the page and the question number!
12. (Original post by Xiroz)
For those x and y equations, did you remember that they do not start at the origin? initial x position is -4a/5 and initial y is 3a/5
It was of course not at the origin initially. Like I said I used vectors and found a position vector relative to O so I wasn't have to worry about directions or which way of the origin I was... It went slack when angle from positive x direction was arccos(-3/5) i think
13. (Original post by miketree)
So you're telling me memorising from the book is hard?
haha no time for keyboard warriors at this time, glad you thought it was easy, laters xxxxxxxxx
14. (Original post by study beats)
guys i failed this exam really badly, i am crying, how can i get over this...my life is ruined
15. (Original post by milliezhao)
I might have remembered it wrong but I got 0.179 in the end did you get that?

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it was 20 RPM and I got 0.179 I think
16. (Original post by Xiroz)
For those x and y equations, did you remember that they do not start at the origin? initial x position is -4a/5 and initial y is 3a/5
Yeah I realised it straight after!! How many marks do you think I will lost for not adding the initial positions?

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17. (Original post by milliezhao)
I might have remembered it wrong but I got 0.179 in the end did you get that?

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Now that one, I am not sure
18. (Original post by milliezhao)
I might have remembered it wrong but I got 0.179 in the end did you get that?

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yea that was right
19. (Original post by •Ball•So•Hard•)
haha no time for keyboard warriors at this time, glad you thought it was easy, laters xxxxxxxxx
Bye
20. For Com question part a I got 0.51 and b I think it was 0.7 or something, anyone got the same?

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