A uniform plank of mass 30kg and length 2.0m is attached to the side of a building using the diagramed contraption with a rope making an angle 40 degrees above the board.
- a.
- What is the tension in the rope?
- b.
- if a person mass 70kg stood a distance x meters from the building on the plank, what would the tension in the rope be?
- c.
- What does you answer to b. become if x=0? Does this make sense?
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