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A small sphere if mass 200 gm is attached to an inextensible string of lenth 130cm whose upper end is fixed to tha ceiling.the sphere is made to describe a horizontal circle of radius 50cm.calcutate the time peripd of this conical pendulum and the tension is the string.`
Centripetal force acting on the horizontal circle is Tcos♧ where ♧ is angle between string and radius of circle.Its Time period is 2π root(l/g) l=130cm=1.3mg=10m/s2T=2π root (1.3/10) = 2.65s
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