FIGURE 12-5 -A 20.0-Kg Uniform Plank Is Supported by the Floor at the Floor

question 7

Short Answer

FIGURE 12-5
-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 Fig. 12-5. 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 of floor on the plank?

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