Question

The close-coiled spring shown in Fig-I is cut into two equal pieces which are combined to form a parallel spring as shown in Fig-II. The ratio of the angular twist for the spring is Fig-II to that of spring in Fig-I due to an axial load P is

• A. 1/2
• B. 1/4
• C. 1/8
• D. 1

Answer 1

The correct option is B 1/4

$\frac{{\theta }_2}{{\theta }_1}=\frac{W_2{L}_2}{W_1{L}_1}=\frac{1}{4}$