FARM MECHANICS. 153 



Weight of Horse Influences Pulling Power. 



Carefully made tests indicate that a horse may safely 

 exert, when walking 2.5 miles an hour and working 10 

 hours a day, a traction equal to about one-twelfth to one- 

 tenth its weight. 



BELGIAN STALLION, SHOWING DRAFT TYPE. 



520. How many horsepower is a horse weighing 1,200 

 pounds capable of developing when walking 2.5 miles an 

 hour and working 10 hours a day ? A 1,600-pound horse ? 



Process : 



1/10 of 1,200 = 120, pounds the horse is able to pull. 

 120 X 5,280 X 2.5 



= 0.8 horsepower. 

 1,980,000 



521. A 1,400-pound horse? 1,000-pound horse? 800- 

 pound horse? 



