The potential energy of a particle along the -axis varies as

PHYSICS · Subjective · AP · Physics C: Mechanics · Work Energy and Power · Work Energy and Power

Problem

The potential energy of a particle along the

x

-axis varies as

U=-20+(x-2)^2

, where

U

is in joules and

x

is in metres. Find the equilibrium position and state whether it is stable or unstable.