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A 12.0-kg mass, fastened to the end of an aluminum wire with an unscratched length of 0.50

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A 12.0-kg mass, fastened to the end of an aluminum wire with an unscratched length of 0.50 m, is whirled in a vertical circle with a constant angular speed of 120 rev/min. The cross-sectional area of the wire is 0.014 cm2• Calculate the elongation of the wire when the mass is
(a) At the lowest point of the path and
(b) At the highest point of its path.
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IDENTIFY Apply Newtons 2nd law to the mass to find the tension in the wire Then apply Eq1110 to the ...View the full answer


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