[Kyalimers]

No. Q is going straight down whereas P has a slope to negotiate so its force is affected i.e. its downward force is less.

[EvenStevens]

Well where's the threshold for this kind of thing?

If P was 10kg in weight, it would slide down, surely.

[Kyalimers]

Yeah. That question is borderline BUT they usually hint in the blurb or in the questions what is going to happen so you do it that way.

[EvenStevens]

I can't see anything in the question that suggests which way the particles will move, to be honest...

[Kyalimers]

(Original post by EvenStevens)
I can't see anything in the question that suggests which way the particles will move, to be honest...

If its a pretty old paper, you won't. They used to think we knew what would happen back then but they TRY to make it easier for us nowadays.

[EvenStevens]

Old?

It's June 2007! O_o

[Kyalimers]

And generally, in these type of questions, Its always the overhanging particle that will move downwards.

[Kyalimers]

(Original post by EvenStevens)
Old?

It's June 2007! O_o

What is it with Edexcel and June 07

In the S1 they asked people to name an instrument used in the orchestra that weighed around 85Kg!!

[EvenStevens]

Haha! I know.

I did that as practise.
I wish I could've done that paper as my actual exam. I would have aced it (got 100% in it!).

And I've got a music A level at grade A so could easily name a heavy instrument =P


I put a grand piano, just because it's about the heaviest instrument you can get... save for a church organ.

[Kyalimers]

(Original post by EvenStevens)
Haha! I know.

I did that as practise.
I wish I could've done that paper as my actual exam. I would have aced it (got 100% in it!).

And I've got a music A level at grade A so could easily name a heavy instrument =P


I put a grand piano, just because it's about the heaviest instrument you can get... save for a church organ.

my mate put piccolo

[Rei]

I remember that question.. piano was what i put i think..

[EvenStevens]

sohanshah, can you explain this one to me? >_<

[Kyalimers]

oooh hang on

[Kyalimers]

Let the time when Q hits the ground, equal 0.

Now imagine P. It is still moving up the slope at the same speed that Q hit the ground. Lets call this speed X.

So moving at an original speed of X at the position Z, P takes Y time to become stationary on the slope. The string is at its lossest point. For the string to become taught again, P needs to move down the slope back to where it was travelling at speed X. This, we called Z.

So this will take Y time again.

So overall time will be 2Y.

[EvenStevens]

I think you confused things by labelling a position A, when position A was already labelled by the pulley.

But yeah I understand. Cheers =D

[Kyalimers]

(Original post by EvenStevens)
I think you confused things by labelling a position A, when position A was already labelled by the pulley.

But yeah I understand. Cheers =D

I'll change it to Z

[Junker]

EvenStevens, looking back at part (a) of the connected particles question you talked me through. Why when resolving with F=ma is the tension not subtracted away from 1500 as well? Because on other questions, I've seen the tension be subtracted also.

[Serendipity*]

(Original post by sohanshah)
What is it with Edexcel and June 07

In the S1 they asked people to name an instrument used in the orchestra that weighed around 85Kg!!

Haa!!
Are you serious??

[Kyalimers]

(Original post by Serendipity*)
Haa!!
Are you serious??

Yes. Quite.

[insparato]

Yep I did that exam, I was like WTF? What kind of question is that!