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Question Number 57840 by pete last updated on 13/Apr/19

$$\mathrm{A}\mathrm{uniform}\mathrm{rod}\mathrm{ABC},\mathrm{weight}50\mathrm{N}\mathrm{and}$$$$\mathrm{length}4\mathrm{m}\mathrm{rests}\mathrm{with}\mathrm{one}\mathrm{end}\mathrm{A}\mathrm{on}\mathrm{rough}$$$$\mathrm{horizontal}\mathrm{ground}\mathrm{and}\mathrm{is}\mathrm{supported}\mathrm{by}$$$$\mathrm{a}\mathrm{smooth}\mathrm{peg}\mathrm{at}\mathrm{B}\mathrm{where}\mathrm{AB}=2.5\mathrm{m}.$$$$\mathrm{The}\mathrm{peg}\mathrm{is}2\mathrm{m}\mathrm{from}\mathrm{the}\mathrm{ground}.\mathrm{Find}\mathrm{the}$$$$\mathrm{reactions}\mathrm{at}\mathrm{A}\mathrm{and}\mathrm{at}\mathrm{the}\mathrm{peg}.$$

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