Saturated steam holds the 80-kg, 10-cm-diameter piston such that it just touches the spring in Fig. 3.32. The spring constant is 8000 N/m. The work required to raise the frictionless piston 20 cm is nearest:
(A) 510 J
(B) 470 J
(C) 320 J
(D) 250 J
Figure 3.32

Transcribed Image Text:

K 8 kN/m 80 kg Steam