Stewart, Balfour, 1828-1887 · Toronto : James Campbell · leaf 23
of a force gravityis, and for this purpose let us take this irregular sheetof iron and hang it up by a thread. You see ivhangs in a particular way, and you also see that thelino already drawn with paint on the sheet is in 12 SCIENCE PRIMERS. [now the same direction as the line of the thread.… … T\z. s. Now let us- hang up the sheet by some third pointin its rim. As before, you have a white line in pro-longation of the thread. Now you will easily see thatthese three white lines all cut one another at the samepoint G; in fact, if you suspend the sheet fromany point freely by a thread, and…
Physics
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