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A belt is required to transmit 10 kW from a motor running at 600 rpm.........

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Question: 

A belt is required to transmit 10 kW from a motor running at 600 rpm. The belt is 12 mm thick and has a mass density 0.001 gm/mm3 . Safe stress in the belt is not to exceed 2.5 N/mm2 , diameter of the driving pulley is 250 mm whereas the speed of the driven pulley is 200 rpm. The two shafts are 1.25 m apart. The coefficient of friction is 0.25, determine

(1) Angle of contact at driving pulley

(2) The width of the belt

Answer: