Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 113
nd run on anindependent battery circuit, as shown in Fig. 31. Theamplitude of vibration may thus be maintained constant andvigorous for any length of time. The trap B (Fig. 30), consists of a flat strip of iron A(Fig. 32), hinged at one end and held up horizontally in thepath of the falling ball by… … Fig. 32. LAW OF FREELY FALLING BODIES 111 When the circuit through the electromagnet is closed, thecurrent passes from the positive terminal of the storage bat-tery to 1, a, A, a, C, back to the negative terminal. Onthrowing the jack-knife switch from 1 to 2, the circuit isbroken, but instantly…
Physics · Mechanics
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