Question

is it possible to have an equilibrium both that stable and unstable
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Answer 1

Explanation:

An equilibrium is considered stable (for simplicity we will consider asymptotic stability only) if the system always returns to it after small disturbances. If the system moves away from the equilibrium after small disturbances, then the equilibrium is unstable.

A system is said to be in stable equilibrium if, when displaced from equilibrium, it experiences a net force or torque in a direction opposite the direction of the displacement. ... A system is in neutral equilibrium if its equilibrium is independent of displacements from its original position.

Hope this helps mate ☺️.