Answer:
The units for the spring constant k is
.
Step-by-step explanation:
According to hooks law:

Where F is a force, k is spring constant and x is distance.
Here, the negative sign of the force of the spring, which implies the force of the spring, is opposed to the displacement of the spring.
Now in order to find the units for spring constant k, ignore the negative sign as we are looking only at the magnitude.


Therefore,

Hence, the units for the spring constant k is
.