Question

A wire of length L and radius r is clamped at one end. On stretching the other end of the wire with a force F, the increase in its length is 1. If another wire of same material but of length 2L and radius 2r is stretched with a force 2F, the increase in its leagth will be

Answer 1

Answer:

in stretching the other end of the wire with force f the increase in its length is 1

Answer 2

Answer:

change in length = FL/AY

= 2F.2L/#(2r)^2.Y

= FL/2AY

= 1/2

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