A uniform ladder 15 ft long is leaning against a frictionless wall at an angle of 53$\degree$ above the horizontal.The weight of the ladder is 30 pounds.A 75-lb boy climbs 6.0-ft up the ladder.What is the magnitude of the friction force exerted on the ladder by the floor?
A)43 lb
B)34 lb
C)38 lb
D)47 lb
E)24 lb

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The Answer of A uniform ladder 15 ft long is leaning against a frictionless wall at an angle of 53$\degree$ above the horizontal.The weight of the ladder is 30 pounds.A 75-lb boy climbs 6.0-ft up the ladder.What is the magnitude of the friction force exerted on the ladder by the floor?
A)43 lb
B)34 lb
C)38 lb
D)47 lb
E)24 lb

A Uniform Ladder 15 Ft Long Is Leaning Against a Frictionless