When a stone is whirled in a vertical circle at the end of a string, the tension in the string is maximum:
Correct answer: D. At the bottom
- A. At the center
- B. At the top
- C. At the horizontal diameter
- D. At the bottom
Explanation
When a stone is whirled in a vertical circle at the end of a string, the tension in the string is maximum at the bottom of the circle. This is because, at the bottom, the tension in the string has to provide the centripetal force required to keep the stone moving in a circular path. At the bottom, the tension must overcome the gravitational force and supply the centripetal force, making it the point where the string experiences the greatest tension. The other options are incorrect because they do not consider the forces acting on the stone in a vertical circle.
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