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The Edexcel M1 (16/05/12 - AM) Revision Thread

JOR2010

Can anyone help me with M1 May 11 Edexcel Question 3, it's really bugging me. The rest of the paper is fine, and usually inclined planes are quite easy, but this has confused me. I get that tan alpha is 3/4, so cos is 4/5 and sin is 3/5, but I can't seem to figure out how the force acting on the particle can be expressed in terms of perpendicular and parallel to the plane. Any help?

Reply 261

ninegrandstudent

11

Original post by solittletime

What part are you having trouble with?

Part C - there's other papers with similar questions are they're confusing me like hell!

Reply 262

username889170

Any predictions of what is going to come up?

Reply 263

arnab

11

Original post by BaconFTW

I will be so sad if they ask one of those 'prove AC bisects AD', vector questions. I haven;t seen any past paper which includes a question like that, it's always i's and j's.

So if they did, how could you do this question?

Reply 264

username889170

Original post by JOR2010

Can anyone help me with M1 May 11 Edexcel Question 3, it's really bugging me. The rest of the paper is fine, and usually inclined planes are quite easy, but this has confused me. I get that tan alpha is 3/4, so cos is 4/5 and sin is 3/5, but I can't seem to figure out how the force acting on the particle can be expressed in terms of perpendicular and parallel to the plane. Any help?

Try doing the question by making up two expressions, not parallel and perpendicular to the plane, but instead do one with Wgcos90 and do the other with Pcos90.

Reply 265

solittletime

Original post by ninegrandstudent

Part C - there's other papers with similar questions are they're confusing me like hell!

Here's my working.

Image0003.png386.3KB

Reply 266

Souriretoujours

Ive been doing some of the solomon past paper questions and have come across quite a few vector moments questions :/. Are these on the edexcel specification?

Reply 267

<3 inbetweener =D

9

can anyone explain 6d from jan 2005 to me? I have no idea what the mark scheme has done and what I did doesn't even appear on there so I don't know how to answer the question :frown:

Reply 268

N0body

Does anyone have any m1 Solomons paper+ mark schemes I could have?

Reply 269

knowledgecorruptz

9

Original post by N0body

Does anyone have any m1 Solomons paper+ mark schemes I could have?

http://www.freeexampapers.com/past_papers.php?l=Past_Papers%2FA+Level%2FMaths%2FEdexcel%2FM1%2FSolomon/
:smile:

Reply 270

nm786

2

Original post by N0body

Does anyone have any m1 Solomons paper+ mark schemes I could have?

this link has all m1 solomon papers and mark schemes:http://www.gouthamrocks.page.tl/M1-PAPERS-%26-MARKSCHEMES.htm

Reply 271

Jukeboxing

8

Who will be posting up solutions post-exam?

Theres no sign of Arsey, from what i see.

Reply 272

knowledgecorruptz

9

Original post by <3 inbetweener D

can anyone explain 6d from jan 2005 to me? I have no idea what the mark scheme has done and what I did doesn't even appear on there so I don't know how to answer the question :frown:

Well, you've got the mass, the impulse and the initial speed. You can use this info to work out the speed after hitting the wall:

I = m(v-u)
2.4 = 0.1(v--14.83289)
Solve to get v = 9.17 (3sf)

Resistance is still 0.3N, so acceleration will still be -3 m/s^2.

Use v = u + at. "v" will be 0 because you're finding out what time it comes to rest at, and "u" will be the speed you found for the particle after hitting the wall (i.e. 9.17 m/s). Solve to find that t = 3.056 (3.06 to 3sf) seconds

Reply 273

Jasmine_777

2

Would really appreciate some clarification on this paper, q6b

http://www.scribd.com/doc/31784844/2005-Jan-QP-Edexcel-Mechanics-1-6677

In q6b, why are they using u as 20 and not 16? I thought to find the speed of C, we'd need to take the speed at B as u ?

Reply 274

knowledgecorruptz

9

Original post by Jasmine_777

Would really appreciate some clarification on this paper, q6b

http://www.scribd.com/doc/31784844/2005-Jan-QP-Edexcel-Mechanics-1-6677

In q6b, why are they using u as 20 and not 16? I thought to find the speed of C, we'd need to take the speed at B as u ?

The distance AC is 30m - not BC! I made the same mistake, picked it up when I was checking, though :smile:

So if A is the starting point, u will have to be 20 m/s.

Reply 275

Jasmine_777

2

Original post by knowledgecorruptz

The distance AC is 30m - not BC! I made the same mistake, picked it up when I was checking, though :smile:

So if A is the starting point, u will have to be 20 m/s.

ooooh, always make silly mistakes! Thanks for clearing that up! :biggrin:

Reply 276

avipsita

Guys the best way to study for this exam is to be through with book..and do all the past papers form 2001-2012 it realli helps.. And as well as edxcel you could also try to do solomon papers.

Reply 277

JOR2010

14

Original post by Alexlol28

Try doing the question by making up two expressions, not parallel and perpendicular to the plane, but instead do one with Wgcos90 and do the other with Pcos90.

My mistake actually, didn't realise the tan of alpha also appeared between the horizontal force and the particle. DOH.

Reply 278

BaconFTW

Original post by arnab

So if they did, how could you do this question?

Well, if you have the official textbook, just look near the beggining of the vectors chapter. The diagrams look something like this;

200px-Parallelogram1.svg.png

Anyway, the point is that I don't particularly understand how they work and I can't be bothered to try and understand them, given that they never seem to make the exam.

Reply 279

NutterFrutter

Original post by BaconFTW

Well, if you have the official textbook, just look near the beggining of the vectors chapter. The diagrams look something like this;

200px-Parallelogram1.svg.png

Anyway, the point is that I don't particularly understand how they work and I can't be bothered to try and understand them, given that they never seem to make the exam.

Well, why are you posting it then? :unsure:

The Edexcel M1 (16/05/12 - AM) Revision Thread

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