OCR MEI M3 May 2016 - Post Exam discussion Watch

mohdstudent
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#61
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#61
(Original post by oswim)
As in 6mg? Because that's what I got for the last question! I got k = 2/3 and agree with strangebannanas answers for everything else. I thought it was a really nice exam overall - lots of show thats. Hopefully I got the 90 ums i need
I think I got 6mg too! How did you answer the question?
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¡Muy bien!
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#62
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#62
(Original post by mohdstudent)
Can anyone remember what the very last part of the last question asked for exactly?

Because i didnt get what you guys got. All i did was find tension when P is attached then I found the tension P+Q are attached and found the difference and i got a positive number. Will I get any marks for this??

Also I am getting both M3 and M2 full papers tomorrow so if anyone is interested in having a copy let me know.
I'm interested!
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Jbird1
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#63
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#63
(Original post by mohdstudent)
Can anyone remember what the very last part of the last question asked for exactly?

Because i didnt get what you guys got. All i did was find tension when P is attached then I found the tension P+Q are attached and found the difference and i got a positive number. Will I get any marks for this??

Also I am getting both M3 and M2 full papers tomorrow so if anyone is interested in having a copy let me know.
Yes please!
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mohdstudent
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#64
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#64
(Original post by ¡Muy bien!)
I'm interested!

Ok Ill send it tomorrow. Do you know if i will be getting any marks for the last question???
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StrangeBanana
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#65
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#65
(Original post by mohdstudent)
Can anyone remember what the very last part of the last question asked for exactly?

Because i didnt get what you guys got. All i did was find tension when P is attached then I found the tension P+Q are attached and found the difference and i got a positive number. Will I get any marks for this??

Also I am getting both M3 and M2 full papers tomorrow so if anyone is interested in having a copy let me know.
it was the instantaneous change in tension, so yeah - find it for the instants before and after the collision and subtract

(Original post by mohdstudent)
I think I got 6mg too! How did you answer the question?
(Original post by cbricknell)
Guys, the answer to the last question was actually 6.
I asked my teacher and shes got a Doctorate and she said no one in the class she knows of got it right.
it is 6mg, my bad

:< I put a 5 inside a square root when I shouldn't have

EDIT:
actually it isn't 6mg lol, I think you put a 5 inside a square root when you shouldn't have :P the answer is definitely -8mg/3
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mohdstudent
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#66
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#66
(Original post by StrangeBanana)
it was the instantaneous change in tension, so yeah - find it for the instants before and after the collision and subtract





it is 6mg, my bad

:< I put a 5 inside a square root when I shouldn't have

EDIT:
actually it isn't 6mg lol, I think you put a 5 inside a square root when you shouldn't have :P the answer is definitely -8mg/3
How is the change negative? shouldnt tension be greater when the mass is greater so change should be +? I mean just thinking about intuitively..Anyway do you think Ill get any marks if i wrote 6mg and showed all my working? And I am getting the paper tomorrow so we can check.
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StrangeBanana
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#67
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#67
(Original post by mohdstudent)
How is the change negative? shouldnt tension be greater when the mass is greater so change should be +? I mean just thinking about intuitively..Anyway do you think Ill get any marks if i wrote 6mg and showed all my working? And I am getting the paper tomorrow so we can check.
well it could be positive, but in this case the decrease in speed is enough to make it negative; in the expression for tension speed is squared, anyway, so it's going to have a larger effect than the mass
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Jbird1
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#68
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#68
(Original post by Jbird1)
Yes please!
How are you getting the papers??
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mohdstudent
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#69
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#69
(Original post by Jbird1)
How are you getting the papers??
From my teacher, he is giving me a copy of M2 and 3.
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Jbird1
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#70
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#70
(Original post by mohdstudent)
From my teacher, he is giving me a copy of M2 and 3.
Do you have them yet?
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Sopranos
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#71
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#71
Can someone explain to me how to do the calculating speed question in SHM. what was the value they gave us?
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Sopranos
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#72
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#72
(Original post by mohdstudent)
Can anyone remember what the very last part of the last question asked for exactly?

Because i didnt get what you guys got. All i did was find tension when P is attached then I found the tension P+Q are attached and found the difference and i got a positive number. Will I get any marks for this??

Also I am getting both M3 and M2 full papers tomorrow so if anyone is interested in having a copy let me know.
could you please inbox me the m3 paper. would be much appreciated.
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StrangeBanana
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(Original post by mohdstudent)
From my teacher, he is giving me a copy of M2 and 3.
(Original post by Jbird1)
Do you have them yet?
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chemari1
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#74
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#74
(Original post by mohdstudent)
Can anyone remember what the very last part of the last question asked for exactly?

Because i didnt get what you guys got. All i did was find tension when P is attached then I found the tension P+Q are attached and found the difference and i got a positive number. Will I get any marks for this??

Also I am getting both M3 and M2 full papers tomorrow so if anyone is interested in having a copy let me know.
please can I have one?
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chemari1
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#75
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#75
so was the question asking uss to show that k=2 wrong?
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chemari1
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#76
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#76
I just cannot believe it I ****ed up something I prepared so much for, now I have to wait till October and the result won't even appear on my ucas application, what the **** is wrong with the world
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StrangeBanana
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#77
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(Original post by chemari1)
so was the question asking uss to show that k=2 wrong?
there was a question that said show k = 2 yeah, but there was a different k which was 2/3
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chemari1
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#78
(Original post by StrangeBanana)
there was a question that said show k = 2 yeah, but there was a different k which was 2/3
thanks, do you know of any other similar exams I can take between now and October?
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StrangeBanana
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#79
(Original post by chemari1)
thanks, do you know of any other similar exams I can take between now and October?
what do you mean?
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chemari1
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#80
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#80
(Original post by StrangeBanana)
what do you mean?
if you know of any exam with the same value of the qualification of M3 I can take between now and October 2016?
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