Analytical mechanics for students of physics and engineering (1913)
Dadourian, Haroutune Mugurditch, 1878- · New York, D. Van Nostrand Company · leaf 317
fo) = a sin [-£t+ 6] = a sin -— (t + to) = a cos (wt + 5) = a cos w (£ + i/)= acosf—^+ 8) = acos-^(£+^), where 5 = - — 8 and fo — -— t0.2 4 234. Epoch. — The constants t0 and k are called epochs,and o and 8 are called epoc/i angles. The meanings of theseconstants will be seen from Fig. 131. 235.… … (I) is tho displacement - time curve (II) is the velocity-time curve Fro. L32. I Lb evident from these expressions that the velocity is aBimple harmonic function of the time, that it has the same PERIODIC MOTION 301 period as the displacement, and thai it differs in phase Prom Pthe latter by , as…
Mechanics, Analytic
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