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+
+//(Power Screws) Example 6.11
+//Refer Fig.6.27 on page 215
+//Force applied by operator P (N)
+P = 100
+//Mean radius R (mm)
+R = 500
+//Coefficient of friction (mu)
+mu = 0.15
+//Nominal diameter of the upper screw dUp (mm)
+dUp = 50
+//Pitch of the upper screw pUp (mm)
+pUp = 12
+//Nominal diameter of the lower screw dLow (mm)
+dLow = 50
+//Pitch of the upper screw pLow (mm)
+pLow = 8
+//Number of starts of both the screws n
+n = 1