I worked that out in the last 2 minutes. I ended up getting (i)lmao, i like how for the probability of q16 b. pretty much gives you the answer to a.
but I didn't get enough time to do (ii) when it was the same thing again ahah
I worked that out in the last 2 minutes. I ended up getting (i)lmao, i like how for the probability of q16 b. pretty much gives you the answer to a.
EXACTLY they fucked up the physics real hard i actually wrote an essay in the exam telling them how badly they fucked up
EXACTLY they fucked up the physics real hard i actually wrote an essay in the exam telling them how badly they fucked up
EXACTLY they fucked up the physics real hard i actually wrote an essay in the exam telling them how badly they fucked up
Where did you guys get the idea of mu being a variable from?
Well if it's the coefficient of friction, then little v would have been the maximum speed the car can travel without slipping up (i.e. a fixed speed for the given radius). Unless we are told that V is this speed (which we weren't), why are we letting v = V to do the question?Where did you guys get the idea of mu being a variable from?
no its not a variable. but i was thrown off by the equation we had to prove because in physics the static coefficient time the normal represents the maximum frictional force that can be provided, so the v they used in the first part was clearly the 'breaking point' past which the car would slide off the track. but then we had to use a different value of v in the next part but still with the same equation. THATs wrong. i ended up just gritting my teeth and believing their bullshit in the endWhere did you guys get the idea of mu being a variable from?
dude. how is mu a variable? you of all people should knowOH HAHAHA yeah mu is a variable, because it's static friction - the friction only exists as much as needed to keep it from moving. But you didn't need to know that realllly to solve the quesiton.
HELL YEAH. had to flip back to the booklet cover to make sure i was doing the right test xDThat balloon q is a mid difficulty 3u q at best lol
bro wellllllll we might be getting into definitions here, what i'm saying is that frictional force varies with speed HAHAH you can say that muN is the max friction and that would mean its not a variable LOLdude. how is mu a variable? you of all people should know
Coefficient of static friction is a constant for two given surfaces. If you knew about this, I think the question as given could confuse you.OH HAHAHA yeah mu is a variable, because it's static friction - the friction only exists as much as needed to keep it from moving. But you didn't need to know that realllly to solve the quesiton.
good boybro wellllllll we might be getting into definitions here, what i'm saying is that frictional force varies with speed HAHAH you can say that muN is the max friction and that would mean its not a variable LOL
P: P:
I would have thought 71 would definitely be up there in band 6. Do people agree?Would a 71 align to 85, considering the test was easier than previous years?
nah should be around 87-90Would a 71 align to 85, considering the test was easier than previous years?
wait but in the q didn't they just always assume static friction, not moving kinetic friction? so like you didn't need to know there was two types of friction to do it anyway ahhgood boy
Probably only just 90, but prepare for the worst lolnah should be around 87-90