Key to Tate's Exercises on mechanics and natural philosophy |
Expressions et termes fréquents
500 barrowmen 60 Weight angle of friction bushel of coals centre of gravity cistern coals in lbs complete the parallelogram cubic feet Depth Distance moved driving wheel due to friction due to gravity Effective work engine embankment engine per hour engine per min equality of moments fall foot foot length foregoing solution friction per min fulcrum hence horse inches Length of ramp load mean pressure moving the train nearly pickmen pier pit in ft pressure of steam pumping water radius large axle rail per ft raised per hour raising the water Resistance friction Resistance of air Resistance of friction revo Rise of rail Simpson's rule sloping earth small axle Space moved Speed of train stroke Tension cord train in lbs train per min units Volume steam discharged Water going water in lbs water raised Weight of train Weight of water whole piston دو وو
Fréquemment cités
Page 42 - ... developed, when the steam is used without expansion, a back pressure of 2 Ibs. being deducted. The fifth column gives the ratios of power developed when the steam is expanded down to 5 Ibs. per square inch above a vacuum, and a back pressure of 2 Ibs. deducted ; and the sixth column gives the part of the stroke at which the steam must be cut off, so as to expand down to 5 Ibs. Column 7 gives the consumption of fuel required to develop the same power, ordinary practice being taken at 100, and...
Page 148 - The three principal sources of energy on the earth are the muscular energy of men and animals, the energy of wind or of flowing water, and the energy of fuels. All these sources of energy are due to the heat of the sun.