Centres of Mass of Plane Figures 0.0 / 5 ? Further MathsCentres of Mass of Plane FiguresA2/A-levelEdexcel Created by: chalky-nerdCreated on: 11-12-20 23:00 How to find centre of mass of a system of n particles? Σmr = ř Σm 1 of 8 Where is the centre of mass of a uniform circular lamina? Centre of the circle 2 of 8 Where is the centre of mass of a uniform rectangular lamina? Centre of the rectangle 3 of 8 Where is the centre of mass of a triangular lamina? At the intersection of the medians (lines through centre of each side) 4 of 8 How to work out centre of mass of a triangular lamina? [(x1 + x2 + x3)/3] , [(y1 + y2 + y3)/3] 5 of 8 Where is the centre of mass of a uniform sector of a circular lamina? On line of symmetry, (2rSinα)/3α from centre, where α is the angle between radius and axis of symmetry 6 of 8 Where is the centre of mass of a uniform circular arc? On the axis of symmetry if the full sector was drawn, (rSinα)/α from the centre of circle, where α is the angle between radius and axis of symmetry 7 of 8 Where is the centre of mass of a uniform rod? Middle of the rod, unless the rod is a circular arc 8 of 8
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