Background
I am trying to create a three-graphics plot using the command GraphicsGrid[] to show the decomposition of the phase plane portrait; unfortunately, the plot created is very ugly since the axes of each graph are not aligned with each other; besides, the corresponding step size of the axes are not identical.
Sources
The differential equation of the dynamic system is given below:
f1 = {y''[t] == -9.82 Sin[y[t]] + 1.5 (y[t] - y'[t]), y[0] == 1, y'[0] == 0}; ss[t_] = NDSolve[f1, y, {t, 0, 10}] Questions
- How to create a multi-graphics plot with axes aligned well automatically?
- How to make sure the step sizes of the axes are consistent with the corresponding axes of different graphics?
Updates
I have tried the solution (specifing the PlotRange and ImageSize of the graphic) offered by @Sumit, which works well in certain situation; however, the questions aforementioned still remain, shown as following: 
the associated codes are given as:
(*differenital equation:*) f1 = {y''[t] == -9.82 Sin[y[t]] + 1.5 (y[t] - y'[t]), y[0] == 1, y'[0] == 0}; ss[t_] = NDSolve[f1, y, {t, 0, 10}]; (*Graph 1: yy*) yyt = Plot[y[t] /. ss[t], {t, 0, 10}, PlotRange -> {{0, 10}, {-0.5, 1.5}}, ImageSize -> {360, 226}, AxesLabel -> {"t", "\[Theta]"}]; yy = Rotate[yyt, -0.5 \[Pi]]; (*Graph 2: Dy*) Dy = Plot[y'[t] /. ss[t], {t, 0, 10}, PlotRange -> {{0, 10}, {-2, 1}}, ImageSize -> {360, 245}, AxesLabel -> {"t", "\!\(\*FractionBox[\(d\[Theta]\), \(dt\)]\)"}]; (*Graph 3: yyDy--the phase plane portrait*) yyDy = ParametricPlot[{y[t], y'[t]} /. ss[t], {t, 0, 10}, PlotRange -> {{-0.5, 1.5}, {-2, 1}}, ImageSize -> {226, 245}, AxesLabel -> {"\[Theta]", "\!\(\*FractionBox[\(d\[Theta]\), \(dt\)]\)"}]; (*Create the multi-graphics plot*) Grid[{{yyDy, Dy}, {yy}}] 
