Hale, Joseph W. L. (Joseph Woodwell Ledwidge), 1886- · New York [etc.] McGraw-Hill book company · leaf 183
se, and all the anglesof the triangle. (Note.—Let the base be x in. and the height 2x 2x in. The tangent of the base angle will then be — or 2.) x 15. Fig. 127 shows a first-class lever. If W2 = 40 lb. to find 168 MECHANICS AND ALLIED SUBJECTS Wi we have the rule 40 X 8 = TFi X distance AB, but… … ^Yf;^i Wo^mn Fig. 128.
Mechanics, Applied
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