A body crosses the topmost point of a vertical circle with a critical speed. Its centripetal acceleration, when the string is horizontal will be:-6g3g2gg
Question
A body crosses the topmost point of a vertical circle with a critical speed. Its centripetal acceleration, when the string is horizontal will be:-6g3g2gg
Solution
The question seems to be incomplete. However, I can provide a general explanation of the concept.
When a body is at the topmost point of a vertical circle, the minimum speed it needs to complete the circle is the critical speed. This is when the tension in the string is zero. The centripetal force at this point is provided by the weight of the body itself, which is mg. So, the centripetal acceleration is g (acceleration due to gravity).
When the body is at a horizontal position in the circle, the centripetal force is still provided by the tension in the string. However, the weight of the body also contributes. The net force is the vector sum of the tension and the weight.
Without specific numbers or more information, it's not possible to provide a numerical answer to the question.
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