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diff --git a/698/CH18/EX18.2/P2_power_transmission.sce b/698/CH18/EX18.2/P2_power_transmission.sce
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+clc
+//Example 18.2
+//Power transmission by spur gear
+
+phi=20
+m=8
+b=90
+N=600
+
+Np=16
+So_p=83e6
+y_p=0.094
+G=4
+strength_p=So_p*y_p
+
+Ng=Np*G
+So_g=103e6
+y_g=0.135
+strength_g=So_g*y_g
+
+if strength_p < strength_g
+ printf('Pinion is weaker\n\n')
+else
+ printf('Gear is weaker\n\n')
+end
+
+V=((2*%pi*N)/60)*((Np*m)/(2*1000))
+printf('Pitch line velocity is %0.3f m/s\n\n',V)
+
+S_allowable = So_p* (3/(3+V))
+printf('Allowable stress is %0.2f MN/m^2\n\n',S_allowable*1e-6)
+
+F=(S_allowable*b*1e-3*y_p*m*%pi)/1e6
+printf('Force that can be transmitted is %0.3f kN\n\n',F)
+
+P=F*V
+printf('Power that can be transmitted is %0.3f kW\n\n',P)
+
+//End of programme \ No newline at end of file