Question

A particle of mass m is fixed to one end of a light spring of force constant k and unstretched length l. The system is rotated about the other end of the spring with an angular velocity ω, in gravity free space. The increase in length of the spring will be

Answer 1

False Let dl be the increases in length of spring. It means the particle will move on a circular path of radius (l + dl) and the restoring force due to spring (=kdl) will provide the required centripetal force.