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//(Power Screws) Example 6.9
//Refer Fig.6.16 on page 203
//Number of starts on the screw n
n = 1
//Nominal diameter of the screw d (mm)
d = 22
//Pitch of the screw p (mm)
p = 5
//Coeffecient of friction on the threads and collar mu
mu = 0.15
//Mean radius of the friction collar rm (mm)
rm = 15
//Clamp capacity W (N)
W = 750
//Yield tensile strength of 30C8 Syt (N/mm2)
Syt = 400
//Force exerted by the operator P (N)
P = 20
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