Dynamic equilibrium can be described as a balanced moving object. The object is balanced because the forces against it are balanced, and it maintains a constant speed. These objects will continue at a steady pace until the force on them is disturbed or changed. Once the force is changed, the steady state of dynamic equilibrium is lost. Dynamic equilibrium is different from static equilibrium,
. where a non-moving object is balanced. Static equilibrium defines objects that are stationary and have no speed. Dynamic equilibrium can be applied to things in our daily lives such as muscle strength, the ocean, and even the stock market. You can find more information here: http://en.wikipedia.org/wiki/Dynamic_equilibrium