What is the minimum velocity to be given to the bob of a pendulum of length 'l' which is suspended normally so that it makes a complete vertical rotation?
Is it rootover 4gl or rootover 5gl? If it is (root)4gl then what is (root)5gl for and if it is (root)5gl,then what is (root)4gl for?In some book I saw (root)4gl and in some, (root)5gl..
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