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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?

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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?

(a) 75N

(b) 35N

(c) 50N

(d) 25N

The question was posed to me in unit test.

Question is from Friction and Motion topic in section Laws of Motion of Engineering Physics I

1 Answer

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Best answer
Correct option is (a) 75N

The explanation: f = μR = μmg

 f = 0.3×250 = 75N.

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