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8. 2 In problem 8. 1, an ordinary V-belt drive used between a motor and a grinder, the grind- er is to run for

8. 2 In problem 8. 1, an ordinary V-belt drive used between a motor and a grinder, the grind- er is to run for 8h per day. Known motor power P=4kW,rotary velocity n =1460r/ min. Find the number of A type belt.

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