Physics Predictions/Thoughts (1 Viewer)

[StudyOnly]

I found MC difficult (last few questions). Some of the short answers were also hard for me. Overall hoping for a low to mid B6.
EDIT: On second thoughts: Might be a B5

 

[akkjen]

what did people get for the fan question? and also the protractor one?
i found it quite hard

 

[psmao]

How do you think you went?

I was switching between “wtf is this” and “okay I got it” during the exam lol

 

[psmao]

The fan question was stolen from atar notes

No u, I did every problem from atar notes and it’s not on it iirc

 

[Arrowshaft]

I was switching between “wtf is this” and “okay I got it” during the exam lol

Same! With string question, duuuude I didn’t realise that the Picture showed the front of the car until 20 mins before the exam Hahahah, I thought it was linear motion and was so confused for a while. I hate how subtle they are with the diagrams. Got it in the end though

 

[psmao]

Same! With string question, duuuude I didn’t realise that the Picture showed the front of the car until 20 mins before the exam Hahahah, I thought it was linear motion and was so confused for a while. I hate how subtle they are with the diagrams. Got it in the end though

Did u deduce a relationship between acceleration and angle?

 

[Arrowshaft]

Did u deduce a relationship between acceleration and angle?

Yeah

 

[psmao]

Yeah

I did the same lol What did u get

 

[Idkwhattoput]

I did the same lol What did u get

I let theta be the angle between the string and the normal, and then saud tan(theta)=(gravity force)/(centripetal force). This was assuming the car was turning. I then reaarranged to find v, but im not sure if its right. I have to try it out

 

[Arrowshaft]

I let theta be the angle between the string and the normal, and then saud tan(theta)=(gravity force)/(centripetal force). This was assuming the car was turning. I then reaarranged to find v, but im not sure if its right. I have to try it out

Yep. Got tan theta = v^2/rg

 

[Arrowshaft]

Its all over now my dudes! Anyone up to play minecraft?

 

[AHafza]

Its all over now my dudes! Anyone up to play minecraft?

90 raw my guy?

 

[Arrowshaft]

90 raw my guy?

Haha no way

 

[Arrowshaft]

Maybe if I’m lucky but idek at this point

 

[AHafza]

Haha no way

Hopefully a band 6 aligned then

 

[Qiaochu Chen]

Yep. Got tan theta = v^2/rg

Did you have mass in you formula at all?

 

[Drdusk]

Were there lots more calculations compared to the Old syllabus?

Looks like everyone did well. Well done!

 

[Arrowshaft]

Did you have mass in you formula at all?

No

 

[Arrowshaft]

Were there lots more calculations compared to the Old syllabus?

Looks like everyone did well. Well done!

Yep, a lot more! there was a good balance between theory, skill and calculations

 

[Arrowshaft]

@Qiaochu Chen this is how I did it.
By resolving forces, we see that the centripetal force points inwards, and the bead experiences a downward acceleration.









Correct me if I'm wrong though.