Answer:
Here is the diagram to help you
[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\linethickness{0.4mm}\qbezier(0,5)(5,4.5)(5,0)\qbezier(0,5)(0,5)(5,0)\put(0,0){\line(0,1){5}}\put(-1,0){\line(1,0){7}}\put(0,5){\vector(1,0){3.5}}\multiput(-0.5,0)(0.5,0){13}{\qbezier(0,0)(0,0)(-0.3,-0.3)}\put(-1,2.5){\bf{H}}\put(4,4.9){$\bf{u = u_x}$}\put(2.3,-1){\bf{R}}\qbezier(4.3,0)(4.2,0.3)(4.5,0.5)\put(3.5,0.3){$\bf \Theta$}\end{picture}[/tex]
- [tex]\setlength{\unitlength}{2mm}\begin{picture}(0,0)\thicklines\put(3,6){\circle{3}}\put(2.9,4.5){\vector(0,-3){2cm}}\put(-3.9,-10){\line(3,0){3cm}}\multiput(-3.5,-10)(0.8,0){18}{\line(1,-2){2mm}}\put(-3.7,0){$\sf\footnotesize 9.8 ms^{-2}$}\put(6,0){\vector(0,3){1.2cm}}\put(5.5,6){\line(3,0){2mm}}\put(5,-1.2){\sf\footnotesize height}\put(6,-2){\vector(0,-3){1.2cm}}\put(5.5,-8){\line(1,0){2mm}}\end{picture}[/tex]
