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//(Brakes) Example 12.6
//Limit of the product pv
pv = 2
//Coefficient of friction between the drum and the friction lining mu
mu = 0.2
//Gear ratio between the brake and cable drum g
g = 4
//Permissible intensity of pressure on friction lining pmax (N/mm2)
pmax = 1
//Radius of the brake drum Rb (mm)
Rb = 200
//Radius of the cable drum Rc (mm)
Rc = 150
//Mass attached to the cable drum m (kg)
m = 500
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