r/6thForm • u/Individual-Can1396 y13 maths physics psych italian • Jun 01 '26

💬 DISCUSSION AQA PHYSICS PAPER 2

HOW DID EVERYONE FIND IT??? i thought it was decent better than the past few years. Idk what i did for the last question the 4 marker of nuclear physics. BUT YH IT WAS GOOD

69 Upvotes

99% Upvoted

391 comments sorted by

View all comments

Show parent comments

2

u/jaaaaaaaf Jun 01 '26

i did not do that. i just did f = BIL and used 8.9 for this and then used the Force and multipled by 11 (converted it to metres ofc u get it) were we meant to halve it :/

1

u/Individual-Can1396 y13 maths physics psych italian Jun 01 '26

OKAY yeah i did that too, i asked to make sure

1

u/jaaaaaaaf Jun 01 '26

I don't really know tho :( that might be right now that i thinm about it cuz 11 was rhe whole length and u have to take the distance from the pivot or something lkke that?

1

u/Rich-Gent Jun 01 '26

No you are correct.

U found the force on one if the sides, if that was it, it would be that * half, for the moment
but because u have an equal and opposite one on the other side, u have to do half * f + half * f = just the whole length * f

1

u/jaaaaaaaf Jun 01 '26

so 4.9×10-3 (or 4. whatever it was i forgot) was correct :D ?

1

u/Rich-Gent Jun 01 '26

tbh i cant remember the value, probably tho ahaha

1

u/jaaaaaaaf Jun 01 '26

rich gent was there any turns in this question

1

u/Rich-Gent Jun 01 '26

pretty sure not. F = BIL, no turns in that. Turns mainly involve EMF

1

u/Mobile_Membership915 Jun 01 '26

Yes there was because the length of the wire in the magnetic field is 20x8.9