Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 56
s, to weigh it ? 2. A hand-barrow (Fig. 43), with the mass loaded on it weighs 210 pounds. Thecentre of gravity ofthe barrow and loadis 4 feet from thefront handles and3 feet from theback ones. Findthe amount eachman carries. 3. A cubical blockof granite, whoseedge is 3 feet inlength and… … Fig. 43.—The hand-harrow. THE PULLEY 49 52. The Pulley. The pulley is used sometimes to change thedirection in which a force acts, sometimes to gain mechanicaladvantage, and sometimes for both purposes. We shall neglectthe weight and friction of the pulley and the rope. A single fixed pulley such…
Physics
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