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March 27, 2015

March 27, 2015

Posted by **Shashanoid** on Monday, November 4, 2013 at 7:10am.

U(x)=λ4(x2−a2)2+b2x2.(1)

Here we use λ= 6 kg/(m2s2), a= 4 m, and b= 36 kg/s2.

------ then ,

(b) Find a stable equilibrium point x0 such that x0 is positive. (in meters)

x0=

unanswered

(c) Do a Taylor expansion of the force F(x) for x close to the equilibrium point, x≃x0, that is F(x)=F0−k(x−x0)+… What are the values for F0 (in Newton) and k (in kg/s2)?

hint: For help on using Taylor series to express the potential energy function near a stable minimum, we encourage you to look at the following page in the section on small oscillations:here

F0=

unanswered

k=

unanswered

(d) What is the period T of small oscillations (in seconds) of this mass around the equilibrium point x0? (Note that the parameter k found in the previous question acts like a spring constant that wants to pull small deviations back to the equilibrium point)

T=

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