Question

In the following data, the four wires made of the same material have length L and radius r. Which of these will have the maximum extension when the same force is applied?

(a) L = 50 cm, r = 0.4 mm
(b) L = 100 cm, r = 1 mm
(c) L = 200 cm, r = 2 mm
(d) L = 300 cm, r = 3 mm

PLEASE ANSWER HONESTLY ☹​

Answer 1

Answer:

Where the symbols have their usual meaning As the wires are made of the same material,therefore Young. s modulus is the same four wires.As the T and Y are the same for the four wires. Lr2 is maximum for wire of length L=100 cm and radius r=0.2 mm