IV.Force on a Dielectric Material 0 Eo depth Figure 11.6.6 Slab of dielectric partially C extending between capacitor plates.The spacing,a,is much less than either b or the depth c of the system into the paper. Further,the upper surface at is many spacings a away from the upper and lower edges of the capacitor plates,as is the lower surface as well. Courtesy of Hermann A.Haus and James R.Melcher.Used with permission. C()=5o(b-5)c.EEc a 黄-支但 In equilibrium: Mass density 氏=2e-o)=ga fluid weight 5=-1v2e-o) 2 pga2 6.641,Electromagnetic Fields,Forces,and Motion Lecture 12 Prof.Markus Zahn Page 7 of 96.641, Electromagnetic Fields, Forces, and Motion Lecture 12 Prof. Markus Zahn Page 7 of 9 IV. Force on a Dielectric Material Courtesy of Hermann A. Haus and James R. Melcher. Used with permission. ( ) ( ) − ξ ξ ξ + ε0 b c ε c C = a a ( ) ξ ξ ξ 2 1 dC f= v 2 d ( ) ε ε − 2 0 1 c = v 2 a In equilibrium: Mass density ξ ( ) ε ε − ρξ   2 0 fluid weight 1 c f = v = g ac 2 a ( ) − ξ ρ ε ε 2 0 2 1 v = 2 ga