Barton, Edwin H. (Edwin Henry), b. 1858 · London, Macmillan and Co., limited · leaf 38
tes OM. 15. Velocity in Simple Harmonic Motion.—In figure7, let PT represent the velocity v of the point P. DrawPK parallel to OY, and let TK be drawn parallel toOX. Then PK represents in magnitude and direction thevelocity of M. But the angle TPK is equal to the anglePOX, which equals the angle… … -Simple HarmonicMotion. (3), 20 SOUND CHAI\ II same direction. In the interpretation of (4) we must takedistances to the right or upwards as positive, and those tothe left or downwards as negative. Note also that theline MP must be taken in the order of the letters, andnot in the reverse order.…
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