Question

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

(a) 0.5 m

(b) 1.0 mm

(c) 2.0 mm

(d) 4.0 mm.

Answer 1

The correct answer is

(b) 1.0 mm