(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://www.edexcel.com/migrationdocuments/GCE New GCE/sam-gce-physics.pdf

Unit 4 Q18)

"A do-it-yourself..."

could someone please explain to me ci) and cii)

2. Relevant equations

I cannot think of any equation to help me

3. The attempt at a solution

I looked at the mark-scheme and they said mass = Area * velocity

What I don't understand is why this is true

for cii)

Force = mass * acceleration

so acceleration (moving in a circle) = v^2/r

acceleration = (14*14)/0.9 = 217.78

But this would give an enourmous answer to cii) which is far greater than the correct answer?

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# Physics Edexcel Specimen question

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