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A block of mass m = 4 kg slides along a horizontal table when it encounters the free end of a horizontal spring of spring constant k = 16 N/m. The spring is initially on its equilibrium state, defined when its free end is at x=0 in the figure. Right before
(a) What is the work done by the friction force on the block while it is sliding down the inclined plane? Express your answer in terms of g, m, L, θ, μ1, and μ2 (enter theta for θ, mu_1 for μ1, and mu_2 for μ2). Wf= (b) What is the work done by the

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