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2. [20 points] A spring and damper are connected in parallel, and have the same displacement and velocity. The spring is initially at its relaxed position and the initial velocity is zero. Starting at time $t=0$ (State 1), a velocity is imposed given by $V = 0.2t^{3/4}$ m/s, until time $t=2$ s (State 2). The damping constant $b = 100$ N s/m and the spring constant $k = 100$ N/m. (a) Show whether $W_{spring} > W_{damper}$, $W_{damper} > W_{spring}$ or $W_{damper} = W_{spring}$ for the process between States 1 and 2? (b) If we draw a system boundary around both spring and damper, what is the heat transfer for the combined system, $Q_{1-2}$ (J)?

          2. [20 points] A spring and damper are connected in parallel, and have the same displacement and velocity. The spring is initially at its relaxed position and the initial velocity is zero. Starting at time $t=0$ (State 1), a velocity is imposed given by $V = 0.2t^{3/4}$ m/s, until time $t=2$ s (State 2). The damping constant $b = 100$ N s/m and the spring constant $k = 100$ N/m.
(a) Show whether $W_{spring} > W_{damper}$, $W_{damper} > W_{spring}$ or $W_{damper} = W_{spring}$ for the process between States 1 and 2?
(b) If we draw a system boundary around both spring and damper, what is the heat transfer for the combined system, $Q_{1-2}$ (J)?

2. [20 points] A spring and damper are connected in parallel, and have the same displacement and velocity. The spring is initially at its relaxed position and the initial velocity is zero. Starting at time t=0 (State 1), a velocity is imposed given by V = 0.2t^3/4 m/s, until time t=2 s (State 2). The damping constant b = 100 N s/m and the spring constant k = 100 N/m.
(a) Show whether Wspring > Wdamper, Wdamper > Wspring or Wdamper = Wspring for the process between States 1 and 2?
(b) If we draw a system boundary around both spring and damper, what is the heat transfer for the combined system, Q1-2 (J)?

Added by Vicente J.

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