Question

A spring of force constant $k$ is cut into two equal parts, which are then joined parallel to each other. The force constant of the combination will be

• A. $4k$
• B. $2k$
• C. $k$
• D. $\frac{k}{2}$

Answer 1

Answer: (A)

$4k$

As from above concept 1, the constant of each spring will be 2k. When they are joined together in parallel, the equivalent constant will be 4k. Hence, option A is correct.