Mechanical laboratory methods; the testing of instruments and machines in the mechanical engineering laboratory and in practice (1922)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 103
themotion of the point from 1 to2 is the same as that corre-sponding to the motion of thepoint around the area, sincewheel returns backward toinitial position during thetion 1-2. In Fig. 53, the motionof the point causes a change ofposition of the wheel from 5 to 6.The line 6-7 is the component… … the its mo- 1-2 Fig. 53. 15 PLANIMETERS 87 diagram, and c the length of the planimeter arm (see Test 14,principles). Also, area = /iX£ in which h is the mean height and I the length of the diagram.Hence McMc = hl, from which h = —y-. From the similarity of triangles 1-3-4 and 6-7-5, S c , , . , e…
Mechanical engineering
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