Physics Predictions/Thoughts (1 Viewer)

StudyOnly

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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

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

Arrowshaft

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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

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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?
 

Idkwhattoput

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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

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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
 

Drdusk

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Were there lots more calculations compared to the Old syllabus?

Looks like everyone did well. Well done!
 

Arrowshaft

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@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.
 

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