Answer :
Given,
The spring constant of the spring, k=27.4 N/m
The stretch in the spring, x=2.1 m
The magnitude of the restoring force of the spring is given by,
[tex]F=kx[/tex]Where F is the force required to stretch the given spring 2.1 m
On substituting the known values,
[tex]\begin{gathered} F=27.4\times2.1 \\ =57.54\text{ N} \end{gathered}[/tex]The force required to stretch the spring is 57.54 N