set output 'impulse_plot_b.ps' 
set term postscript color enhanced 'Helvectica,18'  
set style line 1 lt rgb 'red' lw 3  
set style line 2 lt rgb 'sea-green' lw 3  
set style line 3 lt rgb 'blue' lw 3  
set style line 4 lt rgb 'cyan' lw 3  
set style line 5 lt rgb 'violet' lw 3  
set grid 
set key top right 
set ylabel 'Force (N) ' 
set xlabel 'Time (sec)' 
set title 'A varying force '
plot [0:10][0:50]  40.0*exp(0.0 - (x-4.0)*(x-4.0))    with lines ls 3 t ''  
set output 
quit 
