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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)