A Ladder Is Extended to a Length of 8 M

question 14

Multiple Choice

A ladder is extended to a length of 8 m.It rests against a smooth frictionless vertical wall at an angle of 55 degrees to the horizontal.The ladder has a mass of 30 kg,and its center of mass is three-eighths of the way up the ladder from the floor.Calculate the magnitude of the resultant of the horizontal and vertical forces at the bottom of the ladder and the floor.

• A)371 N
• B)294 N
• C)77.0 N
• D)304 N
• E)284 N

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