Mathematics · A levelPure mathematics and mechanics · H240/03
Torus Maths original · OCR style1
A uniform horizontal plank AB is 5 m long and weighs 200 N. It rests on supports at A and at C, where AC=3 m. A person weighing 600 N walks from A towards B. Find the distance from A at which the plank is on the point of tipping.
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