[Perpetuallity]

(Original post by cazman34)
How about the acceleration of the particle moving down the slope? Tell me you got 1.06ms^-2 as well haha

1.05 m/s^2 so yeah, close enough

Edit: I rounded alpha here

[priteshp]

For that last question were we ment to split the shapes into two or three? Bc I split it into 3. And has anyone got the paper??

[cazman34]

What did everyone get as alpha?

[Astonix]

I found the test today really quite nice, in comparison to all the other papers.

I got stuck on finding the tension AP (question 6) because I managed to skip over the part which said P had a weight, so ended up with the tension equal to 0. Realised my mistake in the end.

Other question I probably lost a mark on is the height the sky diver fell. I rushed it and got height is aprox. 817.3m or something similar to that. Anyone else get that?

[RoundNRound]

(Original post by cazman34)
How about the acceleration of the particle moving down the slope? Tell me you got 1.06ms^-2 as well haha

I got that

[cazman34]

(Original post by Astonix)
I found the test today really quite nice, in comparison to all the other papers.

I got stuck on finding the tension AP (question 6) because I managed to skip over the part which said P had a weight, so ended up with the tension equal to 0. Realised my mistake in the end.

Other question I probably lost a mark on is the height the sky diver fell. I rushed it and got height is aprox. 817.3m or something similar to that. Anyone else get that?

I got something around 817.3 too, probably exactly that :P

[Astonix]

(Original post by priteshp)
For that last question were we ment to split the shapes into two or three? Bc I split it into 3. And has anyone got the paper??

I split it into 3. You were meant to I think. They drew dotted lines splitting it up into three, and I don't know a simple way of finding the area and CoM of an L-shape without splitting it into 2.

[Astonix]

(Original post by cazman34)
What did everyone get as alpha?

If you're on about question 6, I got alpha as about 54 I think.

[Perpetuallity]

(Original post by cazman34)
I got something around 817.3 too, probably exactly that :P

807.5m if I remember rightly

[ConstantlyStressed]

(Original post by cazman34)
What did everyone get as alpha?

Which one? I remember alpha being 52.57 or something..

I thought the exam went really well
I'm glad that no trick questions were thrown out there; I was panicking like mad prior to the exam.

Does anyone remember what they got for v on question 7 - the hot air balloon question? I got 49, which for some reason doesn't seem right.

[priteshp]

(Original post by Astonix)
I split it into 3. You were meant to I think. They drew dotted lines splitting it up into three, and I don't know a simple way of finding the area and CoM of an L-shape without splitting it into 2.

Pheww I can't remember my answer most probs got most of marks for that anyways.

Any grade boundaries prediction?????

[ConstantlyStressed]

(Original post by Perpetuallity)
807.5m if I remember rightly

Ah yes, I got that Really happy now!

[Perpetuallity]

(Original post by ConstantlyStressed)
Which one? I remember alpha being 52.57 or something..

I thought the exam went really well
I'm glad that no trick questions were thrown out there; I was panicking like mad prior to the exam.

Does anyone remember what they got for v on question 7 - the hot air balloon question? I got 49, which for some reason doesn't seem right.

Yep, that's what I got

v=u + at = 0 + 5(9.8) = 49m/s

[priteshp]

(Original post by ConstantlyStressed)
Which one? I remember alpha being 52.57 or something..

I thought the exam went really well
I'm glad that no trick questions were thrown out there; I was panicking like mad prior to the exam.

Does anyone remember what they got for v on question 7 - the hot air balloon question? I got 49, which for some reason doesn't seem right.

That is right what's what I got

[ConstantlyStressed]

(Original post by Perpetuallity)
Yep, that's what I got

v=u + at = 0 + 5(9.8) = 49m/s

Yes...I feel so relieved...

Now I've got C4 to study for..blegh

[CTRSohcan]

Yeah, I seem to be getting what others are getting. Some numbers I remember: 807.m for the SUVATs question, 29000N and 60kg for 1. a and b respectively. 0.4m for the equilibrium question. Coefficient of Restitution = 0.36. I remember a 41.2N, and alpha equaling 57.? somewhere.

A nice paper overall, I think I've lost some marks at the end of Question 3 and 9, but I got the main marks anyway. Hopefully the A grade boundary is around 58~

[priteshp]

So for that alpha question did ppl do tan-1 the number they gave for the angle???

[Astonix]

(Original post by priteshp)
So for that alpha question did ppl do tan-1 the number they gave for the angle???

I used,



and as you (should) know, the cos^2 and sin^2 cancel to 1, so left with R, which I then plugged back in to previous equations to get alpha.

I checked it with the tan method in the exam too and came out with the same answer.

[welshyshu]

Anyone have an unofficial mark scheme?