Austin, Louis W. (Louis Winslow), 1867-1932, Thwing, Charles B. (Charles Burton), 1860-1946, joint author · Boston, Allyn and Bacon · leaf 87
ent of inertia I, of the deflectingmagnet JYiS, from the formula — J=(ll+4)m (See p. 40.) where 21 equals the length, r equals the radius, and m themass of the cylindrical magnet. Determine the time of oscillation, £, of iViS, by method1, p. 41, taking 20 oscillations. In order that the direc-tive… … Egg=h Fig. 31. value of M/IL From these two expressions, by eliminat-ing J/, we obtain the value if. Value of MjH. — MjH is determined as follows (see MAGNETISM. 75 Fig. 31) : Suppose a small magnetic needle of pole strength// and length 2V to be held deflected through an angle, </>,in…
Physics
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