# An Elementary Treatise on Plumbing, Heating, and Ventilation; Prepared for Students of the International Correspondence Schools ... with Practical Questions and Examples Volume 1

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## Description

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 edition. Excerpt: ...weight and the large weight as follows: 40--7.86 = 32.14' = distance between the center of gravity of the two small weights and the center of gravity of the 80-lb. weight. Applying rule. Art. 478, 17.22 X 32.14 = 553.45. 17.22 + 80 = 97.22. 553.45 + 97.22 = 5. 693' = distance from the center of the 80-lb. weight. Ans. 483. Center of Gravity of a Solid. In a body free to move, the center of gravity will lie in a vertical plumb line drawn through the point of support. Therefore, to find the position of the center of gravity of an irregular solid, as the crank, Fig. 69, suspend it at some point, as B, so that it will move freely. Drop a plumb line from the point of suspension, and mark its direction. Suspend the body at another point, as A, and repeat the process. The intersection C of the two lines will be directly over the center of gravity. Since the center of gravity depends wholly upon the shape and weight of a body, it may be without the body, as in the case of a circular ring whose center of gravity is the same as the center of the circumference of the ring. EXAMPLES FOR PRACTICE. 1. A spherical shell has a wrought-iron handle attached to it. The shell is 10" in diameter, and weighs 20 lb. The handle is 11;" in diameter, and the distance from the center of the shell to the end of the handle is 4 ft. Where is the center of gravity? Take the weight of a cubic inch of wrought iron as.278 lb. Ans. 13.612" from center of shell. 2. The distance between the centers of two bodies is 51'. The weights of the bodies being 20 and 73 1b., where is the center of gravity? Ans. 10.968" from the center of large weight. 3. A hollow engine piston weighs 275 lb., and is 311' thick. Assuming the piston rod to be straight...show more

## Product details

• Paperback | 84 pages
• 189 x 246 x 4mm | 168g
• United States
• English
• black & white illustrations
• 1236840682
• 9781236840684