A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 95
possible to verifythe laws of motion given inarticles 67, 68. The essen-tial parts of the machine areshown in Fig. 29, There isa pulley over which a threadpasses, holding any weightsP and Q. The axis of thepulley rests on two smallerwheels, called friction-wheels,which serve to diminish thefriction… … 74.] DYNAMICAL PROBLEMS. 77 in the same position serves, if desired, to remove a por-tion of the weight without disturbing the motion of therest. For this last purpose the extra weight is in theform of a straight bar (p), which is caught by the ring-as the weight moves through it. A pendulum to…
Mechanics
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