Explicación paso a paso:
[tex]E= \frac{1}{2}k x^{2}[/tex]
[tex]K= \frac{2E}{X^{2} }[/tex]
[tex]K= \frac{[M L^{2} T^{-2}] }{[L^{2} ]}[/tex]
[tex]K= [M T^{-2}][/tex]
