Answer:
F=19.25 N
Explanation:
The restoring force for a spring is given by:
[tex]\vec{F}=-k \vec{x}[/tex]
Where k is the spring constant and [tex] \vec{x}[/tex] is the spring deformation.
The minus sign indicates that force is opposed to the deformation direction.
According to the problem:
[tex]k=55 \;N/m[/tex] and [tex]x=0.35 \;m [/tex]
Thus, in magnitude, the restoring force is:
[tex]F=55\frac{N}{m} *0.35m=19.25\; N[/tex]
