. Animal mechanics. Animal mechanics. 78 ANIMAL MECHANICS Here A represents the muscle, B the lever, and C the fulcrum. The power of the nruscle is not represented by the distance of its insertion a, from the fulcrum C. The hue which truly represents the lever must pass __M from the centre of FIG. 21. motion, perpendic- ularly to the line of the tendon, viz., C 6. Here, again, by the direction of the tendon, as well as by its actual attachment to the bone, power is lost and velocity gained. We may compare the muscular power to the weight which impels a machine. In studying machinery, it is man
. Animal mechanics. Animal mechanics. 78 ANIMAL MECHANICS Here A represents the muscle, B the lever, and C the fulcrum. The power of the nruscle is not represented by the distance of its insertion a, from the fulcrum C. The hue which truly represents the lever must pass __M from the centre of FIG. 21. motion, perpendic- ularly to the line of the tendon, viz., C 6. Here, again, by the direction of the tendon, as well as by its actual attachment to the bone, power is lost and velocity gained. We may compare the muscular power to the weight which impels a machine. In studying machinery, it is manifest that weight and velocity are equivalent. The handle of the winch in a crane is a lever, and the space through which it moves, in comparison with the slow motion of the weight, is the measure of its power. If the weight, raised by the crane, be permitted to go down, the wheels revolve, and the handle moves with the velocity of a cannon-ball, and will be as destructive if it hit the workman. The weight here is the power, but it operates with so much disadvantage, that the hand upon the handle of the winch can stop it: but give it way, let the accelerated motion take place, and the hand would be shattered which touched it. Just so the fly-wheel, moving at first. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bell, Charles, Sir, 1774-1842; Wyman, Jeffries, 1814-1874. Cambridge [Mass. ] Printed at the Riverside press
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercambr, bookyear1902
