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Suppose a ladder of length L = 8 m and mass m = 20 kg is...

Suppose a ladder of length L = 8 m and mass m = 20 kg is leaning up against a wall such that it makes an angle of θ = 70 degree angle with the floor and is not moving. For this problem, we'll say there is no one standing on the ladder. As we did at the end of discussion, we'll also imagine that the ladder is up against a very smooth wall so that there is no frictional force exerted on the ladder by the wall, but there is a frictional force between the bottom of the ladder and the floor. What is the magnitude of the fictional force between the ladder and the floor?

98.0 N

20.0 N

107 N

26.7 N

0 N

35.7 N
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