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Question

If a ladder weighing 250N is placed against a smooth vertical wall having a coefficient of friction between it and floor 0.3, then what is the maximum force of friction available at the point of contact between the ladder and the floor?
  1. 75N
  2. 50N
  3. 35N
  4. 25N

A
35N
B
25N
C
75N
D
50N
Solution
Verified by Toppr

Maximum frictional force acting on the ladder is when the ladder stands straight on the ground.
Thus N=mg=250N
Thus the frictional force is μN=0.3×250N=75N

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