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,

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,

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.

Share with your friends

Talk Doctor Online in Bissoy App

Salim Ahmed Kawsar · Answer 1 · Feb 05, 2023 15:29:48

The correct answer is (b) 1.0 mm

Explanation:

The elongation will be the same because in both cases it is pulled by the same force at its both ends. In the case of hanging wire, the lower end is pulled by the weight W downwards and the upper end is pulled by the support upwards by the same magnitude of the force.

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,

1 Answers