Hooke's law is a law of physics that states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, Fs = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring.
In order to get your smiley, you must now use the above equation to calculate the.... lol just kidding! However, without Hooke's law, some toys would not be possible 😉
Stealth will be required. BYOP