# SCIENCE

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A uniform ladder which is 10metres long and weighs 300newtons leans with its upper end against smooth vertical wall and its lower end on arough ground.the bottom of the ladder is 6metres from the base of the wall.a man weighing 700newtons stands on the ladder at a point 6metres above the ground.calculate the magnitude and direction of the forces exerted on the ladder by (a)THE WALL(B)THE GROUND