Did anyone actually understand how to do the ladder question? I’ve never seen one with it at an angle before in any past papers or practise questions?

Reply 84

anon000000

1

Original post by suomynona123

what did people get for the contact force for q11b?

around 17. something or 18. something i cant remember, hbu?

Reply 85

Luke14635582774

8

Original post by Raqd

Did anyone actually understand how to do the ladder question? I’ve never seen one with it at an angle before in any past papers or practise questions?

For the first part you did not have to do anything with the 55 degree angle apart from use it to do 180-55 it was just the same as if the wall was straight idk about the second part

Reply 86

Aidantm17

10

Original post by anon000000

around 17. something or 18. something i cant remember, hbu?

Was that for the ladder one? I think i got around 11.2 but I think I did it wrong

Reply 87

anon000000

1

Original post by Aidantm17

Was that for the ladder one? I think i got around 11.2 but I think I did it wrong

thats what i got for the contact force, a few ppl from my school got the same but honestly not 100% sure if its right, im not confident at all haha

Reply 88

anon000000

1

Original post by Aidantm17

Was that for the ladder one? I think i got around 11.2 but I think I did it wrong

did you do contact force = square root of the sum of Friction squared + reaction(A) squared?

Reply 89

UdumoLwakhe

7

Original post by anon000000

thats what i got for the contact force, a few ppl from my school got the same but honestly not 100% sure if its right, im not confident at all haha

It was weird because the questions where asking for resultant hence had to use Pythag to find magnitude

unofficial ms?

Original post by Aidantm17

Also was anyone else fuming that it said use g=-10, my stupid ass did the whole question with 9.8 and then had to do it again lmao

you got one mark penalty for that question if g=9.8 used, then all other marks will be awarded

Reply 92

FatalArcher

11

Lol what what that 😭😭😭

Reply 93

_wai.yingggg__

4

Original post by UdumoLwakhe

Differential equation you had to use the fact acceleration is equal to dv/dt

I got that question,
- a = dv/dt
- put v on LHS > 1/v dv = (something) dt
- for the side with dt i used a substitution
- +c = ln (17.5 / 7)
- then apply those log laws with addition/subtraction of ln (something) s

Reply 94

Aidantm17

10

Original post by _wai.yingggg__

I got that question,
- a = dv/dt
- put v on LHS > 1/v dv = (something) dt
- for the side with dt i used a substitution
- +c = ln (17.5 / 7)
- then apply those log laws with addition/subtraction of ln (something) s

urghhh that makes so much sense, I just didnt spot swapping a for dv/dt at the start

Reply 95

versacequeen

9

What the actual f**k was that paper pls

Reply 96

versacequeen

9

nothing like the goddamn past papers I hope whoever made this paper gets deported immediately

Reply 97

heeeee22092004

1

why they asking for mechanics in the pure section💀

Reply 98

versacequeen

9

its the way a girl who has an offer from OXFORD FOR MATHS came out of that exam and burst into tears straight away, they had no right to make it so hard that people worry about it and ruin their summer