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+//CHAPTER 5 ILLUSRTATION 5 PAGE NO 163
+//TITLE:Inertia Force Analysis in Machines
+//Figure 5.3
+clc
+clear
+pi=3.141
+N=1800//         speed of the petrol engine in rpm
+r=.06//          radius of crank in m
+l=.240//         length of connecting rod in m
+D=.1//           diameter of the piston in m
+mR=1//          mass of piston in kg
+p=.8*10^6//       gas pressure in N/m^2
+x=.012//          distance moved by piston in m
+//===============================================
+w=2*pi*N/60//              angular velocity of the engine in rad/s
+n=l/r
+Fl=pi/4*D^2*p//          load on the piston in N
+teeta=32//               by mearument from the figure 5.3
+Fi=mR*w^2*r*(cosd(teeta)+cosd(2*teeta)/(n))//   inertia force due to reciprocating parts in N
+Fp=Fl-Fi//            net load on the gudgeon pin in N
+Fq=n*Fp/((n^2-(sind(teeta))^2)^.5)//      thrust in the connecting rod in N
+Fn=Fp*sind(teeta)/((n^2-(sind(teeta))^2)^.5)//   reaction between the piston and cylinder in N
+w1=(Fl/mR/r/(cosd(teeta)+cosd(2*teeta)/(n)))^.5
+N1=60*w1/(2*pi)//                            
+printf('Net load on the gudgeon pin= %.3f N\n Thrust in the connecting rod= %.3f N\n Reaction between the cylinder and piston= %.3f N\n The engine speed at which the above values become zero= %.3f rpm',Fp,Fq,Fn,N1)