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Question

i) Find the centre of area of the lamina shown in Figure Q1(a). ii) Find the angle the lamina makes with the horizontal axis if the lamina is suspended from point A.

b) Calculate mass of a box, MB required to accelerate the 50 kg mass in Figure Q1(b) by 2 m/s?. Take the coefficient of friction between the steel box and the surface to be 0.35. Sketch the free body diagram.

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