# Which equation describes the magnitude of force needed to deform a spring (F),

*label*Physics

*timer*Asked: Apr 23rd, 2015

**Question description**

Which equation describes the magnitude of force needed to deform a spring (F), the distance of deformation (x), and the spring constant (k)? |

*F*= k/

*x*

b. *F* = -k/*x*

c. *F* = k + *x*

d. *F* = -k*x*