Q. A spring having a spring constant $'K'$ is loaded with a mass $'m^{'}.$ The spring is cut into two equal parts and one of these is loaded again with the same mass. The new spring constant is
A) $K/2$
B) $K$
C) $2K$
D) $K^{2}$
Explanation
(c) Spring constant$\ (K) \propto \frac{1}{Length\ of\ the\ spring\ (l)}$
as length becomes half, $k$ becomes twice is $2K$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.