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A 15 m ladder weighing 50 kg rests against a smoothwall at a point 12 m above the ground. The centreof gravity of the ladder is one third the way up. A80 kg man climbs half way up the ladder. Find the8)forces exerted by the sysiem on the ground and thiawall.Ans 136.8 kgwt, 42.5 kgwt)56

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