Question

3. When a weight of 5 kg is suspended from a copper wire
of length 30 m and diameter 0.5 mm, the length of the
wire increases by 2.4 cm. If the diameter is doubled, the
extension produced is
(a) 1.2 cm (b) 0.6 (c) 0.3 cm (d) 0.15 cm​

Answer 1

Answer:

1.2 m

Explanation:

because thickness is just doubled so extension becomes half