Stable Equilibrium Condition For conservative systems,the condition that defines a state qo of stable equilibrium is that the total potential energy be minimized 4=9=0 and TPE(qO)≤TPE(q) for all q such that (q-qa)'(q-go)≤ε TPE Stable equilibrium state q 90Stable Equilibrium Condition ( ) ( ) q  q  0 and TPE q0  TPE q for all q such that         q q0 q q0 T For conservative systems, the condition that defines a state q0 of stable equilibrium is that the total potential energy be minimized q TPE q0 Stable equilibrium state