If the length of a #19 cm# spring increases to #54 cm# when a #4 kg# weight is hanging from it, what is the spring's constant?
The spring constant is 112 N/m.
Spring constant it typically given in units of N/m, so I will convert the spring lengths to m. 19 cm = 0.19 m & 54 cm = 0.54 m
The weight of that 4 kg mass is
The amount of stretch that the weight caused was
Therefore the spring constant is
I hope this helps,