Question

If a ladder weighing 250N is placed against a smooth vertical wall having coefficient of friction between it and floor is 0.3, then what is the maximum force of friction available at the point of contact between the ladder and the floor

• A. 75 N
• B. 50 N
• C. 35 N
• D. 25 N

Answer 1

Answer: (A)

75 N

Answer 2

Maximum force of friction $F_{l} = \mu_{s}R = 0.3 \times 250 = 75N$