Edexcel - M3 - 18th May 2016

Original post by kingaaran

I realised I was going to fail this exam if I didn't revise... My past paper marks two weeks ago also showed that :tongue:

I am just gonna go over little things I don't know, do some more practice, can't really do anything extraordinary that I haven't tried before. Wbu?

Loool yh, I motivate myself by just reminding myself that i could fail my alevel. That helps the most, if i am really feeling unproductive i watch motivational videos on youtube.

The day before my exam i'm just going to skim through m3 quickly and do a hard paper and a easy paper, this is so that i can break down any arrogance i have towards the m3 exam and the easy paper will boost my confidence

Reply 442

justthatboy

Original post by physicsmaths

I literally need 100. So i need to bang it.
Gna do one mock and go thru the papers i dropped the most marks in.

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Good luck, lets destroy the exam

Reply 443

Ayman!

Original post by BBeyond

what was your worst paper?

The two papers I got below 90 UMS in were June 12 and Jan 16 (got 89 in this one).

I just redid June 12 and it was much better this time round since my moments are a lot stronger

Reply 444

BBeyond

Original post by Ayman!

The two papers I got below 90 UMS in were June 12 and Jan 16 (got 89 in this one).

I just redid June 12 and it was much better this time round since my moments are a lot stronger

And u can remember how to do it ahaha but yh fair june 12 was hard. Not done jan 16 yet

Reply 445

Hey guys I have some questions :/ Firstly can someone explain to me why if you have a particle doing horizontal circular motion with two strings attached above and below, why it is that the bottom string tension > 0 always. Secondly what centre of mass proofs are you guys gonna bother learning if any? Thanks

Reply 446

tiny hobbit

Original post by TelevisedTadpole

Hey guys I have some questions :/ Firstly can someone explain to me why if you have a particle doing horizontal circular motion with two strings attached above and below, why it is that the bottom string tension > 0 always. Secondly what centre of mass proofs are you guys gonna bother learning if any? Thanks

If the tension in the bottom string vanishes, the particle will fall inwards and downwards and go round in a smaller circle.

Reply 447

Original post by tiny hobbit

If the tension in the bottom string vanishes, the particle will fall inwards and downwards and go round in a smaller circle.

I see. But there are also pendulums which use only a top string (conical pendulum for example)?

Reply 448

tiny hobbit

Original post by TelevisedTadpole

I see. But there are also pendulums which use only a top string (conical pendulum for example)?

Yes. But for the ones with two strings, if you don't whizz it round fast enough, the bottom string will go slack. With one string, if it goes round slowly, it will just drop down a bit and go round in a smaller circle.

Reply 449

Original post by tiny hobbit

Yes. But for the ones with two strings, if you don't whizz it round fast enough, the bottom string will go slack. With one string, if it goes round slowly, it will just drop down a bit and go round in a smaller circle.

hmm ok. Im guessing bottom tension> 0 so it remains a two string circular motion system rather than becoming a single string circular motion system. Also are you gonna learn any centre of mass proofs?

Reply 450

tiny hobbit

Original post by TelevisedTadpole

hmm ok. Im guessing bottom tension> 0 so it remains a two string circular motion system rather than becoming a single string circular motion system. Also are you gonna learn any centre of mass proofs?

Yes.

No, as I'm a retired teacher, not a student.

Reply 451

Original post by tiny hobbit

Yes.

No, as I'm a retired teacher, not a student.

hahahahaha :colondollar:

Thanks for the help anyway :smile:

Reply 452

username1763791

"A third, thankfully small, group wrote broadly similar rants claimingthat their version was definitely the right answer, that it was a disgrace to find errors inexamination papers and that they were reluctantly continuing with Edexcel’s wrongequation for (b) and (c)." LOL

Reply 453

Krollo

17

Original post by Foutre en L'air

"A third, thankfully small, group wrote broadly similar rants claimingthat their version was definitely the right answer, that it was a disgrace to find errors inexamination papers and that they were reluctantly continuing with Edexcel’s wrongequation for (b) and (c)."LOL

Which question is this

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Reply 454

username1763791

Original post by Krollo

Which question is this

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June 2013, Q7 (c)

Reply 455

Krollo

17

Original post by Foutre en L'air

June 2013, Q7 (c)

Lol that's brilliant

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Reply 456

username1162972

18

Original post by Krollo

Lol that's brilliant

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Lets all do something similar on Q1 I will do it if everyone else does.
'This question is technically incorrect by Fermat's Little Theorem, QED'

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Reply 457

username1162972

18

Original post by BBeyond

what was your worst paper?

I think it was june 15 where i got 69/75 cause i ****ing assumed in the circular morionnthat it was at a right angle... Never again.

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Reply 458

username1763791