The uniform 25 lb-f ladder in the figure below rests against the smooth wall at B, and the end A rests on the rough horizontal plane with coefficient of friction shown in the figure. Determine the angle of inclination (theta) of the ladder and the normal reaction at B if the ladder is on the verge of slipping. B Smooth wall 20 ft. H = 0.3 O N(b) = 7,5, 0=59.04° O N(b) = 5.5, 0359.04° O N(b) = 5.5, e-55.04° O N(b) = 7.5, 0=55.04° O

Structural Analysis
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Engineering Mechanics 

The uniform 25 lb-f ladder in the figure below rests against the smooth wall at B, and the end A rests on the rough horizontal plane
with coefficient of friction shown in the figure. Determine the angle of inclination (theta) of the ladder and the normal reaction at B if
the ladder is on the verge of slipping.
B
Smooth
wall
20 ft.
H = 0.3
O N(b) = 7,5, e=59.04°
O N(b) = 5.5, 0359.04°
O N(b) = 5.5, e=55.04°
O N(b) = 7.5, 0=55.04°
Transcribed Image Text:The uniform 25 lb-f ladder in the figure below rests against the smooth wall at B, and the end A rests on the rough horizontal plane with coefficient of friction shown in the figure. Determine the angle of inclination (theta) of the ladder and the normal reaction at B if the ladder is on the verge of slipping. B Smooth wall 20 ft. H = 0.3 O N(b) = 7,5, e=59.04° O N(b) = 5.5, 0359.04° O N(b) = 5.5, e=55.04° O N(b) = 7.5, 0=55.04°
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