The Student Room Group

Edexcel(IAL) M1 June 8th 2016 Discussion

Scroll to see replies

Reply 20
Original post by SaadKaleem
Got T=7 and s=73.5

Who else got 77 kg as the integer max mass in Moments question?


Did you get T=7 by taking the final velocity of B as 3T and then equating the areas of the graph under A and B. So that gives some quadratic equation and there were two t values but one was less than 3.5 so we ignored it and took the other value which was 7?
Original post by Becka99
Did you get T=7 by taking the final velocity of B as 3T and then equating the areas of the graph under A and B. So that gives some quadratic equation and there were two t values but one was less than 3.5 so we ignored it and took the other value which was 7?


Yes, I got a quadratic by equating the distances. Got two values exactly!, the other was less then 3.5 (2.333 something as I recall - don't remember exactly)

I took 7 since it's >3.5 which was obvious.
Original post by SaadKaleem
77.7 isn't an integer though.
do they consider the steps even if the working is wrong?
[QUOTE="mr.holmes;65552613"]
Original post by SaadKaleem
77.7 isn't an integer though.
do they consider the steps even if the working is wrong?


If your working is correct, you'll be awarded method marks accordingly to the point where you've done correctly.. The final answer only carries 1 mark (A1)
Original post by AlvlVictim


Me too 78😍😍😍
:s-smilie:
Original post by AlvlVictim
I got 4.7 although it's gotta be wrong

Posted from TSR Mobile

I got like 5 something weird too😂😂
My Answers: (They could possibly be wrong)

Spoiler

(edited 7 years ago)
Original post by SaadKaleem
My Answers: (They could possibly be wrong)

Spoiler




How did u get r?
Original post by Mimiastc
How did u get r?


The Resistive force?

Basically, I found the deceleration using suvat of the combined mass 10.5 kg and Applied F=ma by considering forces acting on the combined mass to find R.
(edited 7 years ago)
Original post by SaadKaleem
The Resistive for
Basically, I found the deceleration using suvat of the combined mass 10.5 kg and Applied F=ma to the equation to find R.


Was ur deceleration -150 ? And was the downward force 10.5g ?
Original post by Mimiastc
Was ur deceleration -150 ? And was the downward force 10.5g ?

I recall it being -200 something.
Reply 32
Original post by SaadKaleem
My Answers: (They could possibly be wrong)

Spoiler


on Q7 did you round up your m=2? I got m=1.92
Original post by ordu_55
on Q7 did you round up your m=2? I got m=1.92

Got exactly 2 kg.
Original post by Mimiastc
Was ur deceleration -150 ? And was the downward force 10.5g ?


yeah i got that too but i think its wrong :frown:
Reply 35
I got 1575 for R.. Pretty sure it's wrong.
Others seem okay except for the force on pulley..
How much marks was that?
Reply 36
Original post by SaadKaleem
My Answers: (They could possibly be wrong)

Spoiler



I got 21.952 N for force on pulley by string. Is that wrong....I found it using Tsinalpha + Tsinbeta
Original post by Becka99
I got 21.952 N for force on pulley by string. Is that wrong....I found it using Tsinalpha + Tsinbeta


I found it using triangle angles, Splitted the angle between pulley and tension as 45 degrees.

Used, 2TCos45 for the resultant then.
pretty certain these weren't any of the questions on my paper.. were there two different m1 edexcel papers today??
for the last question i attempted the method but i had a mistake in one of the signs i guess and i didnt have time to fix it

so i used the wrong answer for the T for the next part: the one about the forces on the pulley i did the correct method but obviously used the wrong answer for t
do i gain any mark?
that section had 4 marks am i going to loose them all?

Quick Reply