STANDARD Physics Equilibrium of Rigid Bodies MCQ Question
A uniform ladder 3 m long weighing 20 kg leans against a frictionless wall. Its foot rests on a rough floor 1 m from the wall. The reaction forces of the wall and floor are
25√2 N, 203N
50√2 N, 230N
203N, 25√2 N
230N, 50√2 N
Correct Answer
Detailed Explanation
The ladder is in equilibrium, so the sum of forces and moments must be zero. The horizontal reaction force at the wall is 25√2 N, and the vertical reaction force at the floor is 203 N, balancing the weight and maintaining equilibrium.
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