# M2 - FRI Jan 21st (Edexcel) official thread!

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#3

I don't start it for 4 hours yet. If anyone has done it already i'd be very pleased to make their acquaintance.

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#5

(Original post by

any help would be nice. what do you think last question will be?

**kevins**)any help would be nice. what do you think last question will be?

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#7

Jan 2004 was rather hard! has any1 got the soln to Q6c

I've looked at the official mark scheme but I don't get the way they've done it

I've looked at the official mark scheme but I don't get the way they've done it

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#8

(Original post by

Jan 2004 was rather hard! has any1 got the soln to Q6c

I've looked at the official mark scheme but I don't get the way they've done it

**ThugzMansion7**)Jan 2004 was rather hard! has any1 got the soln to Q6c

I've looked at the official mark scheme but I don't get the way they've done it

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#9

**Gaz031**)

Just use the expressions in terms of u, e to find the overall end KE and equate it to (1/6)mu^2.

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#10

(Original post by

**ThugzMansion7**)Use these expressions to find the overall end KE in terms of u, m and e.

You can cancel the u and m to leave an equation in e.

You can then solve this to find the correct value.

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#11

Good luck in the afternoon Edexcel M2 exam everyone!

advice from myself is to think carefully and dun rush too much..

coz i done 4 past paper last night, and made lots of silly mistakes..

remember when to put g and when not to..

and dun get sin and cos mixed up when resolving horizontally and vertically~

lol...yah, i am just silly

advice from myself is to think carefully and dun rush too much..

coz i done 4 past paper last night, and made lots of silly mistakes..

remember when to put g and when not to..

and dun get sin and cos mixed up when resolving horizontally and vertically~

lol...yah, i am just silly

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#12

Good Luck, people!

I did M2 last summer.

I did a question on a topic I knew well to start with, to get the adrenaline level to settle a bit, and left anything I was going to get at all stuck on until the end. It was OK.

Aitch

I did M2 last summer.

I did a question on a topic I knew well to start with, to get the adrenaline level to settle a bit, and left anything I was going to get at all stuck on until the end. It was OK.

Aitch

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#13

just finished it! very good paper!

hehe actually i finished it 4 hours ago!! went out for a drink with my mates after the exam.

hehe actually i finished it 4 hours ago!! went out for a drink with my mates after the exam.

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#14

(Original post by

just finished it! very good paper!

hehe actually i finished it 4 hours ago!! went out for a drink with my mates after the exam.

**KingAS**)just finished it! very good paper!

hehe actually i finished it 4 hours ago!! went out for a drink with my mates after the exam.

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#15

1)a) prove that thing

b) Tcosx = F

and then solve for F

2) a) ...

b) 25 degrees

range e > 2/3

e = 7/9 i think

... wut dya remember?

b) Tcosx = F

and then solve for F

2) a) ...

b) 25 degrees

range e > 2/3

e = 7/9 i think

... wut dya remember?

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jus finished. overall paper was good. i think i just messed up the last question

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#17

I went in mind-blanked, and came out mind-blanked..

Oh man, messed up M2 totally..!

For Car + trailer question...

what did people get for the decelebration after brake applied? I got 0.9...

I totally ignored the fact that there is a Tension force between them..

lol!

For another question on Box moving from S to T....

I got energy gained = 25.8 or something like that..

and i got coeffficent of friction as 0.577...

For the coefficient restitution quetsion..

I can't prove its answer? I keep getting 9e-4 inside the bracket

and next part, i got range of 2/3 < e < 1

and e = 41/45 ....

For the Position vector thing..I remember something like...

61i +28j ...

Thats all I remember..

partly because I am goldfish, and partly because I have selective memory ...

ie. i do not want to remember this exam!

=.= ...........Am I the only one who sucked at M2?

Oh man, messed up M2 totally..!

For Car + trailer question...

what did people get for the decelebration after brake applied? I got 0.9...

I totally ignored the fact that there is a Tension force between them..

lol!

For another question on Box moving from S to T....

I got energy gained = 25.8 or something like that..

and i got coeffficent of friction as 0.577...

For the coefficient restitution quetsion..

I can't prove its answer? I keep getting 9e-4 inside the bracket

and next part, i got range of 2/3 < e < 1

and e = 41/45 ....

For the Position vector thing..I remember something like...

61i +28j ...

Thats all I remember..

partly because I am goldfish, and partly because I have selective memory ...

ie. i do not want to remember this exam!

=.= ...........Am I the only one who sucked at M2?

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#18

(Original post by

1)a) prove that thing

b) Tcosx = F

and then solve for F

2) a) ...

b) 25 degrees

range e > 2/3

e = 7/9 i think

... wut dya remember?

**KingAS**)1)a) prove that thing

b) Tcosx = F

and then solve for F

2) a) ...

b) 25 degrees

range e > 2/3

e = 7/9 i think

... wut dya remember?

Last question (projectiles) I got

a) t = 4.77 seconds

b) forgot what this was. was it distance? got about 100 and something.

one of them, find v, I got horizontal v = 25.6 and vertical v = -21.1 so modulus v is whatever that is (pythagoras).

angle was 39.5 i think.

one of the questions involving a particle on an inclined plane, i got coefficient of friction to be 0.671 or something like that.

The car and trailer question is completely threw me though! No idea about that! Got deceleration is 1.4 ms^-2 but then the rest didnt know how to do.

For the question where you where given velocity in terms of i and j, the last bit I got something like 61i + 148/3 j , so distance is something like 78.5 or something.

For first question, after the "shot that" part, I got that the horizontal component is something like 2/3 W.

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#20

Questions I remember:

1) Statics... hinge with rod with string or whatever it was..

a) Show T = 5/6W

b) The magnitude of horizontal force... 2W/3

2)Centre of mass of the Lamina (rectangle with circle cut out)

a) Distance from left side - 10.7 cm

b) Hung from point A - angle to verticle... 25 degrees (to nearest degree)

3) The thing on inclined plane

a) Energy lost... 40.98 J -> 41.0 J (3sf)

b) coefficient of friction... bad memory

4) Given particle velocity.. and initial position vector as (-3i + 4j)

a) Find F at t = 4....... 5.01N

b) Displacement from O ... 72.4 or 78.6 or something in that region

5) Caravan being towed by car (mass: 1500kg and 1000kg respectively) (resistive force on car = 750N)

a) Show resistive force on caravan.. 1250 N

b) Guy hits breaks... 1500N as a result of breaks.. find Deceleration-- can't remember

c) The trust as a result -- can't remember

d) Work done in stopping vehicle in kJ -- can't remember

6) Two particles going towards each other

a) Show speed of second particle after collision was 1/5 * u * (9e +4)

b) range of e ... something like e > 2/3

c) Given impulse on Q = 32mu/5 (or something) find value of e... e=7/9

7) Projectile... starts at 20m above ground... projected at a speed (can't remember speed)

a) Find time to hit ground.. think i got something like 4.77 seconds

b) Horizontal distance from O to point of impact on ground.. 122m

c) Speed when the particle is at a point (B) 16m above ground... 33.2ms^-1

d) Angle the direction of motion made to horizontal at point (B).. 39.6 degrees.. (3sf)

Thats what I got

Paper wasn't that bad... easier then most past papers.

MdSalih

1) Statics... hinge with rod with string or whatever it was..

a) Show T = 5/6W

b) The magnitude of horizontal force... 2W/3

2)Centre of mass of the Lamina (rectangle with circle cut out)

a) Distance from left side - 10.7 cm

b) Hung from point A - angle to verticle... 25 degrees (to nearest degree)

3) The thing on inclined plane

a) Energy lost... 40.98 J -> 41.0 J (3sf)

b) coefficient of friction... bad memory

4) Given particle velocity.. and initial position vector as (-3i + 4j)

a) Find F at t = 4....... 5.01N

b) Displacement from O ... 72.4 or 78.6 or something in that region

5) Caravan being towed by car (mass: 1500kg and 1000kg respectively) (resistive force on car = 750N)

a) Show resistive force on caravan.. 1250 N

b) Guy hits breaks... 1500N as a result of breaks.. find Deceleration-- can't remember

c) The trust as a result -- can't remember

d) Work done in stopping vehicle in kJ -- can't remember

6) Two particles going towards each other

a) Show speed of second particle after collision was 1/5 * u * (9e +4)

b) range of e ... something like e > 2/3

c) Given impulse on Q = 32mu/5 (or something) find value of e... e=7/9

7) Projectile... starts at 20m above ground... projected at a speed (can't remember speed)

a) Find time to hit ground.. think i got something like 4.77 seconds

b) Horizontal distance from O to point of impact on ground.. 122m

c) Speed when the particle is at a point (B) 16m above ground... 33.2ms^-1

d) Angle the direction of motion made to horizontal at point (B).. 39.6 degrees.. (3sf)

Thats what I got

Paper wasn't that bad... easier then most past papers.

MdSalih

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