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57. A heavy particle is suspended by a 1:5 m long string. Itis given a horizontal velocity of N57 m/s. (a Find theangle made by the string with the upward vertical, whenit becomes slack. (b) Find the speed of the particle atthis instant. (c) Find the maximum height reachedby the particle over the point of suspension. Takeg 10 m/sWI

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