1.

A wire elongates by 1.0 mm when a load W is hanged from it. If this wire goes over a pulley, and two weights W each are hung at the two ends, the elongation of the wire will be

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A wire elongates by 1.0 mm when a load W is hanged from it. If this wire goes over a pulley, and two weights W each are hung at the two ends, the elongation of the wire will be



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