If a ladder weighing 250,N is placed against a smooth vertical wall having coefficient of friction b

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4-2.Friction

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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 ........ $N$

A

$75$

B

$50$

C

$35$

D

$25$

(AIIMS-2002)

Solution

(a)$F = \mu R = 0.3 \times 250 = 75\;N$

Standard 11

Physics

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