A 9.0-cm-long spring is attached to the ceiling. When a 2.1

Last updated: 7/31/2022

A 9.0-cm-long spring is attached to the ceiling. When a 2.1 kg mass is hung from it, the spring stretches to a length of 18 cm. What is the spring constant k? How long is the spring when a 3.0 kg mass is suspended from it?