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M1 Edexcel Pre-Exam Discussion thread (Tips/Papers/MS) - Please don't merge

I will create two types of thread.

A pre-exam thread, where I will upload papers, MS, boundaries, revision tips. I will update this thread and use it for each exam season.

A post-exam thread, where I will upload my model answers the day following the exam and I will try to answer questions about the paper.

OP

M1 Past Papers I

OP

M1 Past Papers II

OP

M1 Past Papers III

11 June M1 Paper.doc53.8KB

OP

M1 Model Answers I

02 June m1.pdf366.3KB

02 nov m1.pdf316.7KB

03 jan m1.pdf327.6KB

03 June m1.pdf216.4KB

03 nov m1.pdf230.3KB

04 jan m1.pdf222.5KB

04 June m1.pdf229.4KB

OP

M1 Model Answers II

05 June m1.pdf195.0KB

06 Jan M1.pdf210.1KB

06 June m1.pdf204.1KB

07 Jan M1.pdf196.6KB

07 June m1.pdf193.6KB

08 Jan M1.pdf241.6KB

08 june m1.pdf214.4KB

09 June M1 Model Solutions red.pdf595.2KB

10 Jan M1 Model Solutions.pdf516.7KB

Reply 6

Arsey

OP

10

Model Answers III

10 June M1 red.pdf619.3KB

11 Jan M1 Model.pdf544.1KB

11 June M1 Model.pdf747.3KB

Reply 7

Arsey

OP

10

PAST BOUNDARIES



Session	100'	90'	80'	70'	60'	50'	40'
Jan-01	75	71	67	59	51	43	36
Jun-01	68	61	54	47	40	33	26
Jan-02	75	69	63	56	49	42	35
Jun-02	67	59	51	43	36	29	22
Nov-02	74	67	60	53	46	39	32
Jan-03	75	69	62	54	46	39	32
Jun-03	75	69	63	55	47	39	32
Nov-03	75	67	59	51	44	37	30
Jan-04	73	66	59	52	45	38	32
Jun-04	75	69	62	52	42	32	23
Nov-04	72	65	58	51	44	37	31
Jan-05	75	69	62	54	47	40	33
Jun-05	75	69	63	54	46	38	30
Jan-06	70	62	54	46	39	32	25
Jun-06	75	71	67	58	49	41	33
Jan-07	75	69	62	54	46	38	30
Jun-07	75	71	66	57	48	39	30
Jan-08	74	66	58	50	42	35	28
Jun-08	73	65	57	49	41	33	25
Jan-09	63	56	49	42	35	28	21
Jun-09	73	64	55	46	38	30	22
Jan-10	75	68	61	53	45	38	31
Jun-10	75	68	61	53	45	37	29
Jan-11	75	70	64	57	50	43	37
Jun-11     75             68           60            52            44             37           30

Reply 8

Arsey

OP

10

Revision notes

M1 Revision notes.pdf467.9KB

Reply 9

Arsey

OP

10

ADVICE

LEAVE EVERY ANSWER TO 2SF or 3SF

you will lose a mark if you write down a more exact answer in a question involving gravity because you will be using a rounded value of g (9.8 to 2sf). The exam board will accept 3sf as it is standard and g = 9.806 so 3sf answers are normally still correct.

LEARN YOUR ASSUMPTIONS

Rod - Plank will act in a straight line
Uniform - Weight acts at the centre
Particle - Weight acts at a single point (normally end of a rod)
Light - no extra weight added to system, same tension
Smooth pulley - same tension either side
Inextensible - same acceleration in both systems

Things you often ignore in a model

air resistant
constant coefficient of friction
constant acceleration

FORCE ACTING ON PULLEY (INCLINED PLANE)

Just learn this formula, it always works.... plane inclined at angle A to the horizontal

RF = 2T x Cos ( (90-A)/2 )

LEARN ABOUT WEIGHT

Weight = mass x gravity

if mass is given x by g. If weight is given DON'T x by g.

Weight perp to plane = mg cos A
Weight parallel to plane = mg sin A

if A = 30

Weight perp to plane = 0.866mg
Weight parallel to plane = 0.5mg

IMPULSE

Don't bother learning mv-mu or whatever it is. In M1 you are ONLY ever asked for the magnitude of impulse.

Impulse = Change in Momentum, the difference between initial and final momentum.

Impulse measured in Ns.

VECTORS

learn to use matrix/vector notation, makes it a lot easier than i and j

Use your common sense, if necessary draw out the problem on a coordinate grid.

Vel = change in pos / time

acc = change in vel / time

postion at any time = initial pos + t x vel

vel at any time = initial vel + t x acc

Velocity gives you direction

moving parallel to i means that j component of velocity equation is zero

moving parallel to j means that i component of velocity equation is zero

moving NE means that i and j components of velocity equation are equal

moving NW means that - i (component of velocity equation) = j (component of velocity equation)

moving parallel to 2i + 3j means that 1.5i (component of velocity equation)= j (component of velocity equation)

THRUST

Go over the Thrust question from June 09, it is going to come up again at some point

Tension is a pulling force, tensions will point towards each other in a connecting object

Thrust is a pushing force, thrusts will point away from one another in a rigid connecting object

STATICS / DYNAMICS

Understand the difference between the two

Look for moving at constant speed, this means acc = 0, hence the resultant force is zero (equilibrium).

RF = mass x acc

MOMENTS

Don't forget the basic equation that RF vertically = 0

so all the sum of all the forces up must equal the sum of all the forces down

RESOLVING FORCES

When splitting up a force into its components, if you ClOSe the angle it is F x cos A

(edited 12 years ago)

Reply 10

POWW!

12

So gonna be ready by 1pm on Friday! Thanks Arsey

Reply 11

NiHiR

'moving parallel to 2i + 3j means that 1.5i (component of velocity equation)= j (component of velocity equation)'

isn't it 1.5j and 1i ???

Reply 12

Arsey

OP

10

no,

if you multiply your i component by 1.5 this will be equivalent to your j component

for example

v = (2t + 1)i + (5t - 6)j find the time it is parallel to 2i + 3j

(2t + 1) x 1.5 = 5t - 6

3t + 1.5 = 5t - 6

7.5 = 2t

t = 3.75 3hrs 45 min

Reply 13

Parthenon93

7

Do we take g = 9.8 or 9.81?

And how many decimals off are they okay with? Like if I get 74.8 instead of 74.7, will I still get the accuracy mark?

Reply 14

moosecanon

FORCE ACTING ON PULLEY (INCLINED PLANE)

Just learn this formula, it always works.... plane inclined at angle A to the horizontal

RF = 2T x Cos ( (90-A)/2 )

does anoybody know what he/she means by '2T' im quite confused, any help would be appriciated because this sort of a question is usually 5 marks, and a shortcut like this would help :tongue:

Reply 15

moosecanon

Original post by Parthenon93

Do we take g = 9.8 or 9.81?

And how many decimals off are they okay with? Like if I get 74.8 instead of 74.7, will I still get the accuracy mark?

they don't specify, but usually 9.8, 9.81 is generally used in physics

Reply 16

IAmTheChosenOne

Original post by Arsey

,,,

Hey Arsey, sorry for posting this here but are you planning to upload solutions for S1 at midnight? :smile:

Reply 17

nereik6794

2

Original post by moosecanon

does anoybody know what he/she means by '2T' im quite confused, any help would be appriciated because this sort of a question is usually 5 marks, and a shortcut like this would help :tongue:

T is the tension in the string/rope :smile:

x

Reply 18

POWW!

12

Original post by Arsey

...

Quick question about impulse, when doing I=M(V-U) do you take the direction of the particle in to account?
E.g. A of 2kg was going left with speed 3ms-1 after collision its direction of motion was reversed and was travelling with speed 4ms-1
Would the impulse be (taking right as positive)
I=2(4- -2)
I=12ns?

Reply 19

nereik6794

2

Original post by POWW!

Quick question about impulse, when doing I=M(V-U) do you take the direction of the particle in to account?
E.g. A of 2kg was going left with speed 3ms-1 after collision its direction of motion was reversed and was travelling with speed 4ms-1
Would the impulse be (taking right as positive)
I=2(4- -2)
I=12ns?

Yes you do take the direction of the speed into account mate :smile:

x

M1 Edexcel Pre-Exam Discussion thread (Tips/Papers/MS) - Please don't merge

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