-->//(Power Screws) Example 6.4
 
-->//Refer Fig. 6.13 on page 198
 
-->//Number of starts of the screw n
 
-->n = 1
 n  =
 
    1.  
 
-->//Outer diameter of the screw d (mm)
 
-->d = 40
 d  =
 
    40.  
 
-->//Pitch of the screw p (mm)
 
-->p = 7
 p  =
 
    7.  
 
-->//Weight of the gate w (kN)
 
-->w = 5
 w  =
 
    5.  
 
-->//Frictional resistance in axial direction fr (kN)
 
-->fr = 2
 fr  =
 
    2.  
 
-->//Inner diameter of the thrust washer Di (mm)
 
-->Di = 40
 Di  =
 
    40.  
 
-->//Outer diameter of the thrust washer Do (mm)
 
-->Do = 80
 Do  =
 
    80.  
 
-->//Coefficient of friction at the threads mu1
 
-->mu1 = 0.15
 mu1  =
 
    0.15  
 
-->//Coefficient of friction at the washer mu2
 
-->mu2 = 0.12
 mu2  =
 
    0.12  
 
-->//Radius at which the force is exerted rad (mm)
 
-->rad = 500
 rad  =
 
    500.  
 
-->//Permissible bearing pressure Sb (N/mm2)
 
-->Sb = 5
 Sb  =
 
    5.  
 

Maximum force exerted by each arm when the gate is being raised(P1) = 52.410253 N

Maximum force exerted by each arm when the gate is being lowered(P2) = 15.626055 N

Efficiency of the gate mechanism(eta) = 14.879898 percent

Length of the nut(L) = 28.000000 mm