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Edexcel AS/A2 Mathematics M1 - 8th June 2016 - Official Thread

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Does anyone have any tips on Moments about deciding where a point goes (you're trying to find the distance to that point)

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Original post by KINGYusuf
Does anyone have any tips on Moments about deciding where a point goes (you're trying to find the distance to that point)

Posted from TSR Mobile


?

can you give an example of a question
Reply 362
Avatar for candol
candol
7
Original post by KINGYusuf
Does anyone have any tips on Moments about deciding where a point goes (you're trying to find the distance to that point)

Posted from TSR Mobile


Put it anywhere and call the distance x (or equivalent). Don't waste time trying to make your diagram too accurate
Reply 363
Avatar for RKM21
RKM21
3
Original post by Cryptokyo
My favourite M1 problem ever!!! And home made of course.
Q8.png


You got this final answers for this, I did A and B - got the same answers as you.
My answers are in the spoiler for C&D.

Spoiler

Original post by Cryptokyo
My favourite M1 problem ever!!! And home made of course.
Q8.png


Is this something that could come up in our real exam?
Original post by RKM21
You got this final answers for this, I did A and B - got the same answers as you.
My answers are in the spoiler for C&D.

Spoiler



You are indeed correct!
Original post by Don Pedro K.
Is this something that could come up in our real exam?


A question like this could because it is built off of the principles that you have learnt in M1. The topics it includes is incline planes, resolving forces, pulleys and moments.
Reply 367
Avatar for RKM21
RKM21
3
Original post by Cryptokyo
You are indeed correct!


Thanks, I absolutely loved the question. I just had a look at the paper you created. Do you have the answers for the challenge paper 1.
Original post by Cryptokyo
A question like this could because it is built off of the principles that you have learnt in M1. The topics it includes is incline planes, resolving forces, pulleys and moments.


Hey, I wanted something a bit harder to try for M1 before my retake, where can I find the practice papers you made?

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Original post by RKM21
Thanks, I absolutely loved the question. I just had a look at the paper you created. Do you have the answers for the challenge paper 1.


Lost the PDF with answers so have posted answers in spoiler.

Answers in spoiler for questions that didn't involve show that.

Spoiler

Original post by pineneedles
Hey, I wanted something a bit harder to try for M1 before my retake, where can I find the practice papers you made?

Posted from TSR Mobile


Here you go.

If you are unsure on the wording of any questions just contact me.
Mechanics 1 Practice Paper 4 UPDATE.pdf522.7KB
Reply 371
Avatar for RKM21
RKM21
3
Original post by Cryptokyo
Lost the PDF with answers so have posted answers in spoiler.

Answers in spoiler for questions that didn't involve show that.

Spoiler



Cheers.
Can someone please tell me what OQ and PQ is?
M1 3.png19.0KB
Original post by KINGYusuf
Can someone please tell me what OQ and PQ is?

OQ→=p‾+r‾\overrightarrow{OQ}=\underline{p}+\underline{r}
PQ→=r‾\overrightarrow{PQ}=\underline{r}
(edited 7 years ago)
Original post by Cryptokyo
OQ→=p‾+r‾\overrightarrow{OQ}=\underline{p}+\underline{r}
PQ→=r‾\overrightarrow{PQ}=\underline{r}


Thanks!

Can I not do -p + 2r + p = 2r but that's wrong? :/
Original post by KINGYusuf
Thanks!

Can I not do -p + 2r + p = 2r but that's wrong? :/


The vector you have stated is the vector OB→\overrightarrow{OB}
Original post by Cryptokyo
The vector you have stated is the vector OB→\overrightarrow{OB}


I mean why for OQ can I not do like OB + BQ?

This gives me the wrong answer though
Reply 377
Avatar for Elaria
Elaria
1
Original post by RKM21
You got this final answers for this, I did A and B - got the same answers as you.
My answers are in the spoiler for C&D.

Spoiler



how did you solve 7(b)?
Original post by KINGYusuf
I mean why for OQ can I not do like OB + BQ?

This gives me the wrong answer though


You can use OQ→=OB→+BQ→\overrightarrow{OQ}= \overrightarrow{OB} +\overrightarrow{BQ}

Using
OB→=2r‾\overrightarrow{OB}=2\underline{r}
BQ→=−r‾+p‾\overrightarrow{BQ}=-\underline{r}+\underline{p}
Hence:
OQ→=2r‾−r‾+p‾=r‾+p‾\overrightarrow{OQ}=2\underline{r}-\underline{r}+\underline{p}= \underline{r} + \underline{p}
(edited 7 years ago)
Original post by Cryptokyo
You can use OQ→=OB→+BQ→\overrightarrow{OQ}= \overrightarrow{OB} +\overrightarrow{BQ}

Using
OB→=2r‾\overrightarrow{OB}=2\underline{r}
BQ→=−r‾+p‾\overrightarrow{BQ}=-\underline{r}+\underline{p}
Hence:
OQ→=2r‾−r‾+p‾=r‾+p‾\overrightarrow{OQ}=2\underline{r}-\underline{r}+\underline{p}= \underline{r} + \underline{p}


I'm sorry if I'm being annoying, I just don't get this part of vectors :frown:

Isn't BQ the same as OP, but in the opposite direction?

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