The answer is 2.13 kg*m/s^2 / m
The only way I can see to get that answer is to make the cm into decimeters
4.18 cm = 41.8 dec
That gives me 2.13 but that wouldn't work for the unit kg*m/s^2 / m
When a 9.09kg mass is placed on top of a vertical spring, the spring compresses 4.18 cm. Find the force constant of the spring.
Okay I know the formula for a spring is F=-kx
So k=mg/x
converting the cm to m I get 4.18cm = 0.0418m
So I plug in my numbers
k=(9.09kg)(9.81m/s^2)/ 0.0418...