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A particle attached to a vertical string...

A particle attached to a vertical string of length 1m is projected horizontally with a velocity `5 sqrt2 m//s`
(a) What is maximum height reached by the particle from the lower most point of its trajectory.
(b) If the string breaks when it makes an angle of `60^(@)` with downward vertical, find maximum height reached by the particle from the lower most point of its trajectory

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