A 10-cm-long spring is attached to the ceiling. When a 2.0 kg mass is hung from it, the spring stretches to a length of 15 cm.
(a) What is the spring constant k?
(b) How long is the spring when a 3.0 kg mass is suspended from it?
The solution shows the calculations necessary to find the spring constant and length of extension of a 10cm spring with a 2kg mass hung from it.