Official Edexcel M1 2015 Thread - 3rd June 2015

...bearings are measured clockwise...

A particle is projected vertically upwards from level ground with a speed of 14 m/s
a) Determine the speed of the particle and the distance of the particle from theground, 0.5 s after projection
b) Calculate the total distance travelled by the particle during the first 2 s of itsmotion.
Guys, how do you do part b) for this question. I'm getting 8.4 but the answer is 11.6 Thanks so much.

you've worked out the displacement, they're asking you the distance
Try working out the the time taken to reach maximum height, subtract it from 2
then work out the distance travelled in the remaining time

Does anyone here do statistics?

Hey guys, I'm stuck on a question, can somebody please help me?
M1 Question.jpg

TSR doesn't seem to like your attachment

I think M1 is bit harder than C12.

Oh sorry, here is the question.

Anyone looking for a challenge, look up the 2015 January IAL papers; the M1 paper is by far the hardest of its kind I've seen (A grade boundary of 54)



I'm not the best with moments so take my assistance with a pinch of salt..
The moment of a force about a point is the magnitude of the force multiplied by the perpendicular distance from that point to the line through which the force acts.

With that in mind, for part a, you know that the two forces which act through A are irrelevant. Then you just have to look at the resultant moment of the other two forces (although you do not know the length, the perpendicular distance to each force line is the same so this doesn't matter) Then the sense is just whether it is clockwise or anticlockwise.

Part b is a little trickier, you will have to factor in the 45 degree angle which the new force makes with each side of the square. (just remember you want the perpendicular distance from D to this new line...a little bit of geometry may be required here) Look carefully at whether or not each relevant force (remember, the ones that go through D don't matter) is acting anticlockwise or clockwise so you can equate (as the system is now in equilibrium) and solve for X.

Anyone looking for a challenge, look up the 2015 January IAL papers; the M1 paper is by far the hardest of its kind I've seen (A grade boundary of 54)

Anyone looking for a challenge, look up the 2015 January IAL papers; the M1 paper is by far the hardest of its kind I've seen (A grade boundary of 54)



I'm not the best with moments so take my assistance with a pinch of salt..
The moment of a force about a point is the magnitude of the force multiplied by the perpendicular distance from that point to the line through which the force acts.

With that in mind, for part a, you know that the two forces which act through A are irrelevant. Then you just have to look at the resultant moment of the other two forces (although you do not know the length, the perpendicular distance to each force line is the same so this doesn't matter) Then the sense is just whether it is clockwise or anticlockwise.

Part b is a little trickier, you will have to factor in the 45 degree angle which the new force makes with each side of the square. (just remember you want the perpendicular distance from D to this new line...a little bit of geometry may be required here) Look carefully at whether or not each relevant force (remember, the ones that go through D don't matter) is acting anticlockwise or clockwise so you can equate (as the system is now in equilibrium) and solve for X.

Q4 is hard, but otherwise, what didn't you like about the paper?

Link it


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It's not that I didn't like the paper or couldn't answer the questions; it's just that in general M1 doesn't cause much trouble for me (I'm in Year 13 doing a full FM A level this year and have M2 to contend with and there's lots of overlapping content with physics which helps) but when I did this paper I really felt pushed to actually think hard, which is a good thing I guess (it actually can be a nice aid in avoiding silly mistakes sometimes).
But anyway, the "north west" part of question three could certainly cause some confusion, both Q4 and Q5 derive difficulty from being unstructured which makes them more daunting and forces you to organize your thoughts; Q6 I thought was pretty non standard and I could see part a being easily confusing (it ate a lot of time for me); similar questions to Q8 have been done before but all the same keeping track of the different forces/accelerations can be tricky.

We've had NW quite recently, likewise questions very similar to Q5. I can see that Q6a asking for the greatest distance rather than telling you that the plank was on the point of tilting would require some thought. As you say, you have to keep track of your values in Q8 but this is a question that is asked quite regularly.

Have you done the January 2009 paper? The A boundary was 49.