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[" A body of mass "m" hangs at one end o...

[" A body of mass "m" hangs at one end of a string "],[" of length "l," the other end of which is fixed.It is "],[" given a horizontal velocity so that the string "],[" would just reach where it makes an angel of "],[60^(@)" with the vertical.The tension in the string "],[" at mean position is: "],[[" (1) "2" mg "," (2) "mg," (3) "3" mg "," (4) "sqrt(3)mg]]

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