Concept explainers
Here a stone is suspended at rest by a string. (a) Draw force vectors for all the forces that act on the stone.
(b) Should your vectors have a zero resultant?
(c) Why, or why not?
The force vectors for all the forces that act on the stone.
Answer to Problem 17TE
The force vectors for all the forces that act on the stone are force vector of weight and a force vector of tension due to rope.
Explanation of Solution
When a stone is hanged with a rope, then the tension in the rope is balanced by the weight of the stone. Thus, the magnitude of the tension in the rope is the same as the weight of the stone, but the direction is opposite. The direction of the force vector of weight is down while the direction of the force vector of stone is upward.
The complete vector diagram of stone is shown below:
Here,
Conclusion:
Therefore, the force vectors for all the forces that act on the stone are force vector of weight and a force vector of tension due to rope.
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