A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)
Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 127
sed. EXERCISE 16 (13 in old list). THREE FORCES IN ONE PLANE AND ALL APPLIED AT ONEPOINT: PARALLELOGRAM OF FORCES. Apparatus: Three 8-oz. spring-balances, each provided with twosmall blocks (No. 22) to go under its sides and hold it flat on its backwhen it is lying upon the table. The rectangular… … FIG. 65. die of the long one. Fasten the three loose ends to the hooks of thespring-balances; then lay the latter upon the table, putting theblocks under their sides, as in Fig. 65, and let one student pull ateach balance, taking care that the slit of each balance-face is in a THE PARALLELOGRAM OF…
Physics
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
