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A half kg weight is tied to one end of a...

A half kg weight is tied to one end of a metal wire of length 0.6 m . By holding the other end in the hand, the wire is whirled in a vertical and has an angular velocity of 2 r.p.s. at bottom of the circle. What is the elongation of the wire at the lowest point ? Area of cross-section of the wire = `5 x 10 ^(-6) m^2` . Y for steel = `2 x 10^10 N/m^2` .

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