How was your maths 42 M1

[hellodjfos;s'ff]

Hey guys just came out of the exam hall, just gave my maths m1 variant 2. How was it for you bros, really easy for me 50/50 in this one

 

[Mts.99]

what did u get for power in 2nd question? and distance travelled bw instantaneous rests?

 

[armeena]

what did u get for power in 2nd question? and distance travelled bw instantaneous rests?

distance between instantaneous was 20. i don't remember the power answer, lol. what did you get for that?

 

[Mts.99]

distance between instantaneous was 20. i don't remember the power answer, lol. what did you get for that?

i got 2060000W lol

 

[iamhereforfun]

i got 2060000W lol

lol its correct dw

 

[hellodjfos;s'ff]

i got 2060000W lol

I don't remember exactly but I think that is right. All i know is that it was a long answer with a 2 at the start

 

[hellodjfos;s'ff]

I was most doubtful about the 1st question lol, i got 10.something, what'd you guys get?

 

[hellodjfos;s'ff]

Also, what was your distance in the last question and coefficient of friction? I am asking about these as they were the biggest questions

 

[muaz_ali]

It was very nice.
Q1 10.5
Q2 2060kw
Q3 41.1 and 3.92
Q4 19 and 312
Q5 0.577
Q6 30 and 20m
Q7 3 and 4.8, 2.1
I got these and these are right i confirmed.

 

[hellodjfos;s'ff]

It was very nice.
Q1 10.5
Q2 2060kw
Q3 41.1 and 3.92
Q4 19 and 312
Q5 0.577
Q6 30 and 20m
Q7 3 and 4.8, 2.1
I got these and these are right i confirmed.

Ok niceee, easy then. 50 in that paper definetly

 

[muaz_ali]

threshold is expected to be 51 this year.

 

[DudeWithoutName]

It was very nice.
Q1 10.5
Q2 2060kw
Q3 41.1 and 3.92
Q4 19 and 312
Q5 0.577
Q6 30 and 20m
Q7 3 and 4.8, 2.1
I got these and these are right i confirmed.

did you confirm with your batch or teachers?

 

[hellodjfos;s'ff]

threshold is expected to be 51 this year.

Could be, who knows!
But my friends found some parts tough and got several wrong answers, not sure how. The most common wrong answers were like P=1 in Q1, 3000kw in q2 and something like 5 in the coefficient of friction question. These are the common mistakes my friends made, might not be representative of other centres though

 

[hellodjfos;s'ff]

did you confirm with your batch or teachers?

Pretty sure these are the correct answers as my smart batchmates and I(lol) got these

 

[muaz_ali]

Could be, who knows!
But my friends found some parts tough and got several wrong answers, not sure how. The most common wrong answers were like P=1 in Q1, 3000kw in q2 and something like 5 in the coefficient of friction question. These are the common mistakes my friends made, might not be representative of other centres though

woah lol, it was very easy tbh idk how could they get it wrong. i hadn't solved even one full past paper yet and even then i aced it.

 

[armeena]

Pretty sure these are the correct answers as my smart batchmates and I(lol) got these

got the exact same answers, so hopefully they're right lmao.

 

[hellodjfos;s'ff]

woah lol, it was very easy tbh idk how could they get it wrong. i hadn't solved even one full past paper yet and even then i aced it.

Yeah i know right! Didn't have much practice either since I had bio in the morning

 

[DudeWithoutName]

Could be, who knows!
But my friends found some parts tough and got several wrong answers, not sure how. The most common wrong answers were like P=1 in Q1, 3000kw in q2 and something like 5 in the coefficient of friction question. These are the common mistakes my friends made, might not be representative of other centres though

They got 5.20 because they flipped the direction of P:

For maximum value: P=20gsin(60)+20gcos(60)μ
For minimum value: P+20gsin(60)=20gcos(60)μ(Now this is assuming P acts down the slope, alongside component of weight)
Solving these equations gives μ=5.20
I honestly dont see whats wrong with this method? Opinions?

 

[hellodjfos;s'ff]

If anyone gets hold of the mechanics paper, please do post it. I need to check it with my teacher.

 

[hellodjfos;s'ff]

They got 5.20 because they flipped the direction of P:

For maximum value: P=20gsin(60)+20gcos(60)μ
For minimum value: P+20gsin(60)=20gcos(60)μ(Now this is assuming P acts down the slope, alongside component of weight)
Solving these equations gives μ=5.20
I honestly dont see whats wrong with this method? Opinions?

I feel the same browski, but the other method seems legit to me too. The only reason it puts me off is because the value for coefficient of friction is too large. I know the coefficient of friction can be more than 1 but not as high as 5!