# 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?

##### 1 Answer

Oct 27, 2017

#### Answer:

The spring constant is 112 N/m.

#### Explanation:

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,

Steve