Harmonic oscillations: body total energy
$$E = (\frac{m\cdot v^{2}}{2})+(\frac{k\cdot x^{2}}{2})$$
E - energy
m - mass
v - speed (velocity)
k - stiffness
x - declination
m - mass
v - speed (velocity)
k - stiffness
x - declination
Find
It is known that:
= 