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the potential energy of an object constrained to the xaxis is given by U(x) = 8x2...

the potential energy of an object constrained to the xaxis is given by U(x) = 8x2 - x4, whereU is in joules and x is in meters. Assuming no other forces act on the object,(a) at what positions is this object inequilibrium? (b) Which of these equilibrium positions are stable and which are unstable?

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