Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 77
. 60 PHYSICS ries it to the extreme position on the left, M. If it werenot for the resistance of the air (we have assumed the ab-sence of friction) MM would just equal MM, and thependulum would go on oscillating forever. As it is, the arcof displacement becomes gradually less, and the… … Qr%\ \\ Fig. 22.—Motion of the pendulum. ^^H a u pended from 0 and can only move in an arc of a circlewhose centre is at 0. It must be due to some componentof gravitation acting along the arc MM. Let us investi-gate the matter. Gravitation can only act vertically down-ward, hence we must always…
Physics
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