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Q.

If a ladder weighing $250 N$ 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

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a

$35 N$

b

$75 N$

c

$50 N$

d

$25 N$

answer is A.

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Detailed Solution

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

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