3 69 A particle is suspended vertically from a point inextensible massless string of length L as shown in figure 3 132 A

Question

3 69 A particle is suspended vertically from a point inextensible massless string of length L as shown in figure 3 132 A vertical line AB is at a distance L 8 from O as is given a horizontal velocity u At some point its motion ceases to be circular and eventually the object passes through line AB At the instant of crossing AB its velocity is horizontal Find u 12 at 1 O L L 8 B Figure 3 132

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