A-LevelMathematicsMechanicsFeb/Mar 2022Paper 4 Q712 Marks
A bead, A, of mass 0.1kg is threaded on a long straight rigid wire which is inclined at sin¯¹(7/25) to the horizontal. A is released from rest and moves down the wire. The coefficient of friction between A and the wire is µ. When A has travelled 0.45m down the wire, its speed is 0.6ms¯¹.
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