A ball is hanging from an inextensible string of length If the string is to become horizontal the bob should be projected

Question

A ball is hanging from an inextensible string of length If the string is to become horizontal the bob should be projected horizontally with a velocity of 2gl DIf the bob is to reach a height of 2t above lowest point it should be projected horizontally with a velocity of 4gl If the bob is to reach a maximum angular displacement of 60 it should be projected horizontally with a velocity of g V If the bob is to reach a maximum angular displacement of 30 it should be projected horizontally with a velocity of

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