The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 150
ity. Eliminate t, then y^^ihx, (XII.) an equation to the common parabola, having for its diame-ter the vertical drawn through the point of projection ;and the parameter is 4 times the height due to the initialvelocity of the projection. Let the coordinates be changed, and instead of takingA P for… … M R zLz: P M sin. ^; P R = P M cos, 6;«r a^j + 2; = y sin. 0 ; y^ = y cos. 0, . • , Xj :::^ t/, tan. 6 X But (XII), X : y Vi x^ = y^ tan. 6 — 4 h cos. ^ 0 3/i 4 k cos. ^ 6 (XIII.) THE PATH OF A PROJECTILE IN THE AIR. Let g r express the resistance of the medium. This forcebeing in direction of [T ;…
Mechanics, Applied
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