Equilibrium And Types of Equilibriums

Equilibrium And Types of Equilibriums

Equilibrium:- A rigid body is said to be equilibrium if both the linear momentum and angular momentum of the rigid body remain constant with time.

Or we can say that The linear acceleration of the centre of mass of the body would be zero and also the angular acceleration of the rigid body about any axis would be zero. Or we can say that body possesses two equilibria simultaneously or  Conditions for equilibrium

Types Of Equilibrium:-

(i)        Stable Equilibrium: - A body is said to be in stable equilibrium if it tends to regain its equilibrium position after being slightly disturbed and released. In stable equilibrium A body possesses minimum potential energy.

e.g.:- Simple Pendulum, Book kept on a table, as shown in figure

    (ii)         Unstable Equilibrium:- A body is said to be in unstable equilibrium if it gets further                          disturbed from its mean after being slightly disturbed and released. In unstable equilibrium                   a body possesses maximum potential energy.

      e.g.:- Book kept on one edge, a cylinder on inclined plane, image in figure

(iii)       Neutral Equilibrium :- If a body stays in equilibrium position even after being slightly                       disturbed and released. In neutral equilibrium potential energy remains constant Zero.

    e.g.: - A football rolling on ground, image in figure

You can download this document from ggphysics.com