A uniform 80.0 N ladder 4.0 m long is placed against a frictionless wall with its base situated 2.0 from the wall. Find the forces exerted by the wall and by the ground on the ladder.
Let normal reaction at endpoints be
Force of friction acting between ground and wall is f.
The weight of the ladder will act at the mid-point of the ladder.
Let angle made by the wall with ground is
Then for equilibrium in the horizontal and vertical direction
(1)
(2)
Taking torque about point on ground,
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