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+//CHAPTER 12 ILLUSRTATION 6 PAGE NO 316
+//TITLE:Balancing of reciprocating of masses
+clc
+clear
+pi=3.141
+rA=.25//     stroke length of A piston  in m
+rB=.25//    stroke length of B piston  in m
+rC=.25// stroke length C piston  in m
+N=300// engine speed in rpm
+mRL=280// mass of reciprocating parts in inside cylinder kg
+mRO=240//   mass of reciprocating parts in outside cylinder kg
+c=.5//  portion ofreciprocating masses to be balanced 
+b1=.5//  radius at which masses to be balanced in m
+//======================
+mA=c*mRO//    mass of the reciprocating parts to be balanced foreach outside cylinder in kg
+mB=c*mRL//    mass of the reciprocating parts to be balanced foreach inside cylinder in kg
+B1=79.4//         balancing mass for reciprocating parts in kg
+w=2*pi*N/60//   angular speed in rad/s
+H=B1*w^2*b1//   hammer blow per wheel in N
+printf('Hammer blow per wheel= %.3f N',H)