230 APPENDIX. 



Resistance 1935) 23220 (12 miles per hour in ascending the plane. 

 1935 



38/0 



3870 



* 

 For the velocity when the railway is horizontal, we have, 



Horizontal traction 552 Tbs. 

 Additional friction 69 

 Engine 72 



Resistance 693) 23220 (33-5 miles per hour. 

 2079 



2430 

 2079 



351 



The force arising from gravity being greater than the horizontal traction, in this example, 

 the carriages would of themselves run down the inclined plane with an accelerated velocity ; 

 and this would be the case on all inclinations greater than 1 in 280. 



Example 2. To find the greatest uniform velocity of the same engine and train down an 

 inclination of 1 in 600. 



Engine 12 tons. Gross load 69 



Tender 7 224 



Train 



Gross load 69 13440 



_ 6,00) 1545,60 



Horizontal traction 552 Ifes. 



257-6 IDS. erlect of gravity. 



Horizontal traction 552-0 ffis. 

 Gravity 257'6 



Inclined traction 294*4 down the plane. 

 Additional friction 36-8 one-eighth. 

 Engine 72'0 



Resistance 403-2 



403-2) 23220-0 (57'6 miles per hour. 

 20160 



30600 



28224 



2376 



