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may/june 12 paper 42 Q5 (b) (i)
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_42.pdf
^please help with this
since the reading on the balance increases => there is a downwards force acting on the magnet/balance.
So, according to Newton's 3rd law (action-reaction law), the force on the wire must be in the opp direction ie upwards.