Spring Forces Practice Test

A cart attached to an ideal spring moves on a frictionless track. Equilibrium is $x=0$ at the spring’s natural length, and +$x$ points right. When the cart is at $x=+0.04,\text{m}$, the spring force on it is $F_s=-2.0,\text{N}$. What is the spring force when the cart is at $x=+0.08,\text{m}$?

A mass is attached to an ideal spring on a frictionless table. Equilibrium is $x=0$ at the unstretched length, with +$x$ to the right. The mass is pulled to $x=+0.03,\text{m}$ and released. If the displacement were instead $x=+0.06,\text{m}$, how would the spring force magnitude compare?