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question is about the wire, was there a force indicated downwards, or a velocity? if velocity then lenz's law applies

oh i guess that would make 4 d, i was happy though since that was my worst problem and I was happy with the rest. For those with medical physics, was that the most straightforward question ever?!

can i ask the reason for question 4? I spent half an hour checking the maths with it and im not sure if its a or d. if v=u+at, for vertical u=0, meaning t=v/a. since d said arrive at same time but different velocities, could it be not true since at the same instant time velocities would have to...

T=P, theta=phi (they were the angles right?) but from angle on circumference phi remains that constant while theta decreases as x increases (shown from its eqn) so theta is less than or equal to phi, and max when theta =phi

you shouldn't need to check its nature, it already gave when it was pos, it was max

killing myself, i figured the last question just as i got out after i looked at it for 5 seconds, the rest of the paper was alright though