Question

Why zero speed is not positive at upper most position in vertical circle⭕​

Answer 1

Answer:

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Answer 2

Answer:

At all points along the loop - which we will refer to as circular in shape - there must be some inward component of net force. When at the top of the loop, the gravitational force is directed inwards (down) and so there is less of a need for a normal force in order to meet the net centripetal force requirement.

Explanation:

hence,

zero speed is not positive at upper most position in vertical circle⭕

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