OpenStax
Open Stax: Stability
From a chapter on Statics and Torque in a Physics textbook. This section of the chapter discusses the types of equilibrium, and describes stable, unstable, and neutral equilibriums. Includes questions, problems and exercises.
Texas Education Agency
Texas Gateway: Ap Physics: Statics and Torque: Stability
By the end of this section, you will be able to state the types of equilibrium, describe stable and unstable equilibriums, and describe neutral equilibrium.