Arsey's M2 Edexcel revision and resources thread

radius = 2, COM of a semi circle is 4r/3pi

but this comes from the COM of a lamina sector equation in the formula booklet , go check it out and use alpha = pi/2 (which is half the angle in a semi circle)

Original post by vinnie1234

The formula in the formula booklet (sector of circle) , r = 2 and alpha =pi/2

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Thanks guys, I got t wrong b/c I didn't say 2a= pi, hence a=0.5 pi

Reply 181

ppginprg

4

Hey, good luck this morning everyone! Just wondering if anyone could help me with something before the exam.. How do you know when there is a horizontal and vertical component of a reaction force (in statics) as opposed to just a vertical one?

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Reply 182

Roostertooster

Original post by avb212

Hey, good luck this morning everyone! Just wondering if anyone could help me with something before the exam.. How do you know when there is a horizontal and vertical component of a reaction force (in statics) as opposed to just a vertical one?

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There's always both mate , draw essentially I right angle arrow the arrow

Reply 183

Dilzo999

19

Original post by avb212

Hey, good luck this morning everyone! Just wondering if anyone could help me with something before the exam.. How do you know when there is a horizontal and vertical component of a reaction force (in statics) as opposed to just a vertical one?

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It's only for hinge I think, everything else is just 1.

Reply 184

StarvingAutist

17

Well, that went well. No doubt I made some silly mistakes, but at least I knew how to do everything. Such a nice paper compared to what I was expecting.

Reply 185

RATKING

Original post by StarvingAutist

Well, that went well. No doubt I made some silly mistakes, but at least I knew how to do everything. Such a nice paper compared to what I was expecting.

Indeed

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Reply 186

Gillerz

did anyone else get these?

1, K=4 A=3
2, speed= 2
3, 3.8 23.96 degrees
4, 5/3 2.08=u
5,speed=22.5 acceleration=0.33
6,4.9m 14m
7,root 10/4 w
8, 84.58j 0.19=mu

(edited 9 years ago)

Reply 187

Nabbles

I agree, it was a nice paper. Unfortunately, I messed up and had to pretty much redo question 6, 7 and 8 which didn't leave me enough time to finish question 8. I'm annoyed because the questions were so simple.

Reply 188

AnharM

21

Original post by StarvingAutist

Well, that went well. No doubt I made some silly mistakes, but at least I knew how to do everything. Such a nice paper compared to what I was expecting.

Original post by RATKING

Indeed

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WHAT? You guys found it easy?!

Ahhh...I am so dead.

Reply 189

RATKING

Original post by Gillerz

did anyone else get these?

1, K=4 A=3
2, speed= 2
3, 3.8 22.9 degrees
4,
5,speed=22.5 acceleration=0.33
6,4.9m 14m
7,root 10/4 w
8, 84.58j 0.19=mu

I can remember parts of qs. If someone xoulda upload paper. Would be great!

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Reply 190

StarvingAutist

17

Original post by Gillerz

did anyone else get these?

1, K=4 A=3
2, speed= 2
3, 3.8 22.9 degrees
4,
5,speed=22.5 acceleration=0.33
6,4.9m 14m
7,root 10/4 w
8, 84.58j 0.19=mu

I got your Q1, 2, 5, 6, 8. For 7 I got

\sqrt{\frac{5}{8} w^2}

or something like that. What was Q4?

Reply 191

Gillerz

Original post by RATKING

I can remember parts of qs. If someone xoulda upload paper. Would be great!

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I don't have one, was just trying to remember what i put, did you get any of the same answers?

Reply 192

AnharM

21

Guys, can people retake specific A-Level modules while you're at university? I think I'm going to get a bad grade for FM, because of FP2 and M2, but I want to rectify that next summer. How much does it cost to sit them independently at a college or an exam centre?

Reply 193

StarvingAutist

17

Original post by AnharM

WHAT? You guys found it easy?!

Ahhh...I am so dead.

Don't worry, we may not be representative of all exam sitters :redface:

Reply 194

TheHammer

Original post by Gillerz

did anyone else get these?

1, K=4 A=3
2, speed= 2
3, 3.8 22.9 degrees
4,
5,speed=22.5 acceleration=0.33
6,4.9m 14m
7,root 10/4 w
8, 84.58j 0.19=mu

Got the same, except for 6, I got 12. Something, and 16. Something

Reply 195

Gillerz

Original post by StarvingAutist

I got your Q1, 2, 5, 6, 8. For 7 I got

\sqrt{\frac{5}{8} w^2}

or something like that. What was Q4?

i got 3w/4 for Upwards and W/4 for horizontal, can't remember i'm trying to think.

Reply 196

Nabbles

Original post by AnharM

Guys, can people retake specific A-Level modules while you're at university? I think I'm going to get a bad grade for FM, because of FP2 and M2, but I want to rectify that next summer. How much does it cost to sit them independently at a college or an exam centre?