center of rod would vibrate between C, and C,, and would come apparatus shown in Fig. 3. This consists of an arm the weight W an amount it tends to fall due to the to rest only after the force had ceased acting. R having at one end, B, a knife edge bearing on agate, rotation of mm’ about OO’. Thus… … long foot, provided with pivot bearings, Fig. 5, and an adjusting screw for varying the pressure of the Fig. 5. pen upon the paper. Hunt’s round-pointed ‘Drawing” rod being the hull and our force representing the forces pens No. 99 were used, carried in aluminium quills produced by the unbalanced…
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