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A 810-g block oscillates on the end of a spring whose force constant is
k=60 N/m. The mass moves in a fluid which offers a resistive force
proportional to its speed the proportionality constant is b=0.162
N.s/m.
Write the equation of motion and solution.
What is the period of motion?
Write the displacement as a function of time if at t=0, x= 0 and at t=1
s, x = 0.120 m.

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