Elements of mechanics: for the use of colleges, academies, and high schools (1859)
Peck, William G. (William Guy), 1820-1892 · New York, A. S. Barnes & Burr · leaf 106
P x AG = Q x EG, or, Q = P x —^ If we draw BIT perpendicular to BR, we shall have, T)TTcos BBH = yr-=; ; but we have, for the component B, BIT B = QcosBBII= Q x BB Substituting for Q its value, and reducing, BP AG BHEG X BB When B is depressed, BIT and BB approach equality,and EG continually… … ELEMENTARY MACHINE3. 103 The Balance. 81. A Balance is a machine for weighing bodies: itconsists of a lever AJB, called thebeam, a knife-edge fulcrum F, andtwo scale-pans D and JE, suspendedby knife-edges from the extremitiesof the lever arms FB and FA.These arms should be symmetrical,and of equal…
Mechanics
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