Essay
A 20.0-kg uniform plank is supported by the floor at one end and by a vertical rope at the other as shown in the figure. A 50.0-kg mass person stands on the plank a distance three-fourths of the length plank from the end on the floor. 
(a) What is the tension in the rope?
(b) What is the magnitude of the force that the floor exerts on the plank?
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(a) 466 N ...View Answer
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Correct Answer:
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