Created by StemPy LabWhich statement about the centre of mass of a system is true?
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← A 20 kg uniform plank 4.0 m long rests on supports at its ends, A and B. A 50 kg child stands 1.0 m from A, as shown. Taking g = 9.8 m/s², how hard does support A push up?Particles of 1 kg, 2 kg, 3 kg and 4 kg sit at the corners (0, 0), (2, 0), (2, 2) and (0, 2) of a square, with distances in metres. Where is the centre of mass? →
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