Sara Eckrich Physics Review Question

Unit: Mechanics
Year: 1993 Question#: 8
Question: The diagram at the right represents a force acting on point P. Which pair of concurrent forces would produce equilibrium when added to the force acting at point P?




(1 )
(2 )
(3 )
(4 )
What is this question really asking?




Explanation by: John D (no last names)

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Answer 1
 Incorrect

Answer 1 is incorrect because the force of the vector is southeast, not equal and opposite to the vector in the question. return to top























Answer 2
 Incorrect

Answer 3 is incorrect because the force of the vector is directed northeast, the same as the vector in the question, which if added would not create equilibrium. return to top



























Answer 3

Incorrect

Answer 3 is incorrect because the force of the vector is pointed to the northwest, which is not equal and opposite to the vector in the question
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Answer 4

Correct

Answer 4 is correct because the force of the vector is directed southwest, which is equal and opposite to the vector in the graph, which if added would create an equilibrium.
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What's this question really asking?
Do you know the behavior of vectors and adding them together?
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