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A particle of mass 0.2 kg attached to a ...

A particle of mass 0.2 kg attached to a massless string in a verticle circle of radius 1.2 m. It is imparted a speed of `8 ms^(-1)` at the lowest point of its circular path. Does the particle complete the verticle circle ? What is the change in tension in the string when the particle moves from the position where the string is vertical to the position where the string is horizontal ?

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