1 files changed, 19 insertions, 0 deletions
diff --git a/278/CH27/EX27.4/ex_27_4.sce b/278/CH27/EX27.4/ex_27_4.sce
new file mode 100755
index 000000000..9e6cc2099
--- /dev/null
+++ b/278/CH27/EX27.4/ex_27_4.sce
@@ -0,0 +1,19 @@
+//find
+clc
+//solution
+//given
+Wr=2500//N
+Wa=1500//N
+//Wa/Wr=0.6
+//refer table 27.4
+X=1
+V=1
+Y=0
+W=X*V*Wr + Y*Wa//N
+//from table 27.5,Ks=1.5...
+Ks=1.5
+W1=W*Ks//N
+//ref table 27.6
+C=53000//N
+L=(C/W)^(3)*10^6
+printf("rating life is,%f rev\n",L)
+\ No newline at end of file