a ladder waiting 250 Newtons is placed against and smooth vertical wall having coefficient of friction of 0.3 between IT and floor, then what is the maximum force of friction available at the point of contact between the ladder and the floor?
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75N
Explanation:
a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction of 0.3 between it and floor.
weight of ladder , W = mg = 250N
coefficient of friction between floor and ladder , = 0.3
now, maximum frictional force =
= 0.3 × 250 = 75 N
hence, maximum force of friction available at the point of contact between the ladder and the floor is 75N
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